HP Omnibook 500 Service Manual

							HP Omnibook 500 Troubleshooting and Diagnostics 3-19
Diagnostic Tools
This section describes the following diagnostic tools you can use for troubleshooting and repairing the
Omnibook:
 
• e-DiagTools program (below).
 
• Power-on self-test (page 3-26).
 
• Sycard PCCtest 450 PC Card (page 3-29).
 
• Desktop Management Interface (page 3-30).
 
• BIOS Setup utility (page 3-31).
e-DiagTools
The e-DiagTools hardware diagnostic program provides two levels of testing:
 
• Basic user-level hardware test.
 
• Advanced individual hardware tests.
     
Figure 3-2. e-DiagTools Screens — Basic and Advanced
The tests are designed to run after the system reboots, so that the computer will be in a predictable
state during the tests. The tests are non-destructive, and are intended to preserve the state of the
computer. The computer reboots when you exit the program so drivers can be loaded.
Updating e-DiagTools
You can download the latest version of e-DiagTools from the HP Notebook web site (see page vi),
then install it following the accompanying instructions. 
						

							3-20 Troubleshooting and Diagnostics HP Omnibook 500
Running e-DiagTools
 1.
 Restart the computer.
 2.
 When the HP logo appears, press F10 to start the diagnostic test.
 3.
 When the menu appears, press ENTER to run e-DiagTools.
 4.
 The first time you run the program, you are prompted to select the language for the program.
 5.
 Press F2 to proceed with the basic tests.
 You can also proceed directly to the advanced tests from this point by pressing CTRL-F9
(in which case skip to step 10, below).
 6.
 When the Configuration Description appears, check the list of detected hardware.
  Note
 
If a device is not detected or fails its test, it might be configured incorrectly in BIOS Setup. You
can confirm this by running BIOS Setup and checking the settings—see “BIOS Setup Utility” on
page 3-31.
 7.
 Run the basic test. Press F2 to start the basic hardware test.
 8.
 To exit without running the advanced tests, press F4 to view the Support Ticket. Press F3 to exit.
 9.
 
Optional: Run the advanced tests. Press F2 to open the advanced test screen.
 10.
 Select and run the appropriate tests. Note that individual tests do not appear if the hardware they
test is not detected. Press the following keys to run tests:
 ENTER Runs the highlighted test.
F5 or SPACE Marks/unmarks the highlighted test.
F6 Marks/unmarks all tests in the current menu.
F7 Marks/unmarks all tests in all menus.
F10 Runs all marked tests.
 If a test fails, the error code and description are logged, and the error code is displayed
temporarily. If several errors occur, look for patterns that might indicate a common cause. See
Table 3-3 on page 3-22 for repair suggestions. Consider these suggestions in combination with
other troubleshooting information.
 11.
 
Save the Support Ticket. Press T to update and display a Support Ticket containing system and
test information.
 12.
 When you are finished running tests, press ESC to exit the advanced tests.
 13.
 
Optional: To save the Support Ticket to a floppy disk, press F7 then ALT+C.
 14.
 
Exit. Press F3 and then any key to exit and reboot.
 15.
 
Optional: Open the Support Ticket. In Windows, click Start, Programs, HP e-DiagTools,
e-DiagTools for Windows.
 16.
 Click View to display the Support Ticket.
 17.
 To add information about the problem, click Comments and type the information, then click OK.
 To save or print the Support Ticket, click Save As or Print. 
						

							HP Omnibook 500 Troubleshooting and Diagnostics 3-21
Note that the serial and parallel port tests are more thorough if you connect a loop-back connector to
the port before running the test for that port. See the wiring diagrams below.
141
25 13
6
19 5
Figure 3-3. Serial and Parallel Loopback Connectors
These connections
are not used.
Diodes are 1N4004
or equivalent
(I
F=1A, VF=1V@1A,
V
R=30-400V) 
						

							3-22 Troubleshooting and Diagnostics HP Omnibook 500
Interpreting the Results
The following table lists test groups, error codes, and suggestions for follow-up actions. Consider
these suggestions in combination with other troubleshooting information.
 Table 3-3. e-DiagTools Error Codes
CodeSuggestions
Note: If the BIOS IC appears to be corrupted, you can try
to repair it (see page 2-31).
System Tests
0001h –
0040hReplace the motherboard.
0041h Run BIOS Setup and check IRQ assignments
for all devices.
0050h –
0063hReplace the motherboard.
0070h Replace the CMOS battery.
0071h –
0076hReset the system, then run BIOS Setup and
check settings. Replace the CMOS battery.
Replace the motherboard.
0077h Replace the motherboard.
0078h Reset the system, then run BIOS Setup and
check settings. Replace the CMOS battery.
Replace the motherboard.
0079h Replace the CMOS battery. Replace the
motherboard.
0083h –
008AhReprogram the BIOS IC. Replace the
motherboard.
00C0h –
00CChReplace the motherboard.
Memory Tests
The addresses below are absolute (32-bit) addresses, and
are not in the segment:offset format.
0100h –
0101hReplace the motherboard.
0102h Reprogram the BIOS IC. Replace the
motherboard.
0120h –
0131hReplace the SDRAM module (each 01000000h
represents 16 MB). Replace the motherboard.
0132h –
0150hReplace the SDRAM module (each 01000000h
represents 16 MB).
0160h Remove all but one SDRAM module and
repeat the test. Replace the motherboard.
0170h –
0172hReplace the motherboard.
0180h Replace the SDRAM module (each 01000000h
represents 16 MB). Replace the motherboard.
0181h Replace the motherboard.
0182h Make sure you have the latest version of
e-DiagTools, and repeat the test. Replace the
SDRAM module (each 01000000h represents
16 MB). Replace the motherboard.
0183h –
0184hCheck the installation of the SDRAM module.
Replace the SDRAM module. Replace the
motherboard.
0190h –
01A0hReplace the SDRAM module (each 01000000h
represents 16 MB). Replace the motherboard.
CodeSuggestions
01A1h –
01A5hReplace the motherboard.
01B0h –
01B2hReplace the SDRAM module (each 01000000h
represents 16 MB). Replace the motherboard.
01B3h Replace the motherboard.
Hard Disk Tests
0201h Replace the hard disk. Replace the
motherboard.
0202h –
0204hCheck test parameters and repeat the test.
Replace the hard disk.
0205h Replace the motherboard.
0207h Use BIOS Setup to check the hard disk type.
Check the hard disk installation. Replace the
hard drive/LED flex cable. Replace the hard
disk. Replace the motherboard.
0208h –
0209hTransient DMA error. Repeat the test.
020Ah –
0211hRepeat the test. Run SCANDISK or an
equivalent.
0220h Replace the motherboard.
0240h Replace the hard disk. Replace motherboard.
0252h –
0254hCheck test parameters and repeat the test.
Replace the hard disk.
025Ah –
0260hRepeat the test. Run SCANDISK or an
equivalent. Replace the hard disk.
0265h Check the hard disk installation. Replace the
hard drive/LED flex cable. Replace the hard
disk. Replace the motherboard.
0275h Replace the hard disk.
0280h Check the hard disk installation. Replace the
hard drive/LED flex cable. Replace the hard
disk. Replace the motherboard.
0281h Replace the hard disk.
0290h Repeat the test. Replace the hard disk.
0293h –
0296hReplace the hard disk.
02AAh Check the hard disk installation. Replace the
hard drive/LED flex cable. Replace the hard
disk. Replace the motherboard.
02CCh Use BIOS Setup to check the hard disk type.
Check test parameters and repeat the test.
Replace the hard disk. Replace the
motherboard.
02EEh Run BIOS Setup and temporarily select a drive
type that has more than 200 cylinders, then
repeat the test.
02F1h Use a Recovery CD to restore the original
factory configuration. 
						

							HP Omnibook 500 Troubleshooting and Diagnostics 3-23
CodeSuggestions
02F3h –
02F5hRun SCANDISK or an equivalent. Use a
Recovery CD to restore the original factory
configuration.
02FFh Check the hard disk installation. Replace the
hard drive/LED flex cable. Replace the hard
disk. Replace the motherboard.
9602h –
9607h(See the Hard Disk Tests at the end of the
table.)
Floppy Disk Tests
0301h –
0304hCheck the USB cable (if any). Replace the
floppy drive. Replace the motherboard.
0305h Make sure the floppy disk is fully inserted in the
drive. Make sure the drive is properly installed
or connected. Replace the disk. Check the
USB cable (if any). Replace the floppy drive.
Run the Floppy Disk Controller test. Replace
the motherboard.
0306h Check the USB cable (if any). Replace the
floppy drive.
0307h –
030BhMake sure the floppy disk is fully inserted in the
drive. Make sure the drive is properly installed
or connected. Replace the disk. Check the
USB cable (if any). Replace the floppy drive.
Run the Floppy Disk Controller test. Replace
the motherboard.
030Ch Replace the floppy drive.
Keyboard Tests
0400h –
0401hReplace the motherboard.
0410h –
0415hCheck the keyboard flex cable connection.
Replace the keyboard. Replace the
motherboard.
0415h Replace the switchboard PCA. Replace the
motherboard.
0416h –
0418hReplace the keyboard. Replace the
motherboard.
900Fh Replace the keyboard. Replace the
motherboard.
901Ch Replace the switchboard PCA. Replace the
motherboard.
901Dh Replace the expansion base. Replace the
motherboard.
Serial Port Tests
0601h For the external loopback test, make sure the
loopback connector is constructed and installed
properly. For the external or internal loopback
test, replace the expansion base; replace the
motherboard.
0602h Replace the motherboard.
0603h For the external loopback test, make sure the
loopback connector is constructed and installed
properly. For the external or internal loopback
test, replace the motherboard.
0604h –
0605hReplace the motherboard.
0606h For the external loopback test, make sure the
loopback connector is constructed and installed
properly. For the external or internal loopback
test, replace the motherboard.
CodeSuggestions
0607h Make sure the loopback connector is
constructed and installed properly. Replace the
motherboard.
0608h –
0612hReplace the motherboard.
IR Tests (FIR enabled, undocked)
0618h –
0619hMake sure the machines are positioned
correctly. If the problem persists, replace the
motherboard.
Parallel Port Tests
0701h For the external loopback test, make sure the
loopback connector is constructed and installed
properly. For the external or internal loopback
test, replace the expansion base; replace the
motherboard.
0702h –
0706hReplace the motherboard.
0707h Make sure the loopback connector is
constructed and installed properly.
0708h –
0709hReplace the motherboard.
Audio Tests
0801h Check the speaker connections. Replace the
top case. Replace the motherboard. If this error
occurs for an external headphone, replace the
motherboard.
0802h –
0804hCheck the speaker connections. Replace the
top case. Replace the motherboard.
0806h Check speaker connections and repeat the
test. Replace the top case. Replace the
motherboard. If testing the expansion base,
make sure the computer is docked properly;
repeat the test; replace the expansion base if
the test fails repeatedly.
0810h –
0816hCheck speaker connections and repeat the
test. Replace the top case. Replace the
motherboard.
08C0h –
08C2hCheck the speaker connections. Replace the
top case. If this error occurs for an external
headphone, replace the motherboard.
08D0h –
08F3hReplace the motherboard.
Video Tests
0900h –
0905hReplace the motherboard.
0911h If this test fails on the internal display, replace
the motherboard.
0912h –
0933hReplace the motherboard.
2100h –
2102hReplace the display assembly. Replace the
motherboard. If error also occurs with external
monitor, replace the motherboard.
2110h –
2120hReplace the motherboard. Replace the display
assembly.
2130h Replace the display assembly. Replace the
motherboard. If this error also occurs with
external monitor, replace the motherboard.
2140h –
2141hReplace the motherboard. Replace the display
assembly. 
						

							3-24 Troubleshooting and Diagnostics HP Omnibook 500
CodeSuggestions
2150h Replace the display assembly. Replace the
motherboard. If this error also occurs with
external monitor, replace the motherboard.
9016h Reset the computer. Reprogram the BIOS IC.
Replace the motherboard.
9017h See chapter 5 for cosmetic guidelines. If
warranted, replace the display assembly.
CD-ROM Tests
0A00h Insert a CD in the drive module.
0A01h Repeat the test. Replace the CD-ROM module.
0A02h No repair. (Automatic close not supported.)
0A03h Insert a different CD in the drive and repeat the
test. Check the installation of the CD-ROM
module. Replace the drive. Replace the
expansion base. Replace the motherboard.
0A04h Insert a data CD in the drive module and
repeat the test.
0A05h Insert a different CD in the drive and repeat the
test. Check the installation of the drive module.
Replace the CD-ROM module. Replace the
expansion base. Replace the motherboard.
0A06h Insert a data CD in the drive and repeat the
test. Replace the CD-ROM module.
0A07h Repeat the test. Replace the CD-ROM module.
0A08h Insert an audio CD and repeat the test.
Replace the CD-ROM module.
0A09h Repeat the test. Replace the CD-ROM module.
0A10h –
0A11hInsert an audio CD and repeat the test.
Replace the CD-ROM module.
0A12h Insert a different multisession CD and repeat
the test. Replace the CD-ROM module.
SMBUS Tests
0E00h –
0E20hReplace the motherboard.
ATAPI Removable Tests (LS-120)
0F01h Connect the LS-120 drive and repeat the test.
0F02h –
0F03hInsert a different disk in the LS-120 drive and
repeat the test. Check the installation of the
drive. Replace the drive.
0F04h Replace the LS-120 drive.
0F05h Repeat the test. Replace the LS-120 drive.
0F06h Insert a different disk in the LS-120 drive and
repeat the test. Check the installation of the
drive. Replace the drive.
0F07h Replace the LS-120 drive.
0F08h Insert a different disk in the LS-120 drive and
repeat the test. Check the installation of the
drive. Replace the drive.
0F09h Replace the LS-120 drive.
TI CardBus Tests
1201h Remove any attached CardBus/PCMCIA cards
and repeat the test.
1202h –
1203hReplace the motherboard.
1205h –
1206hInsert a different PC Card and repeat the test.
Replace the motherboard.
1207h Reset the computer. Replace the motherboard.
USB Tests
CodeSuggestions
1301h Reprogram the BIOS IC. Replace the
motherboard.
1302h –
1316hReplace the motherboard.
9006h Make sure a USB device is connected to the
port you are testing. Select the correct speed
for the device. Try another USB device.
Replace the motherboard (or expansion base,
if applicable).
DVD Tests
1900h –
1904hInsert a different DVD in the drive and repeat
the test. Replace the drive.
1905h Make sure the DVD Drive region and DVD
Media region match. If the region is not set for
the drive, use an unencrypted DVD.
LAN/Modem Tests
8000h Note: this test checks only the internal
hardware up to the mini-PCI card, and does not
check the mini-PCI panel or external cabling.
Check the connections. Repeat the test with
the LAN cable/phone line unplugged. Replace
the cable/phone line. Replace the mini-PCI
card. Replace the mini-PCI panel. Replace the
motherboard.
Fan Tests
9001h If the fan is already running, you will not hear a
change. Check the fan connection. Replace the
heatsink. Replace the motherboard.
9002h Reset the computer. Replace the motherboard.
IR Tests (FIR enabled, undocked)
9002h Reset the notebook. Replace the motherboard.
9007h –
9008hReset the notebook. Run BIOS Setup and
restore default settings. Replace the
motherboard.
9009h Do not run this test in Windows. For the one-
unit test, replace the motherboard. For the two-
unit test, make sure the IR ports on the
reflector and test computers are lined up.
Replace the motherboard.
900Ah Repeat the test. For the two-unit test, make
sure the IR ports on the reflector and test
computers are lined up. Replace the
motherboard.
900Ch Repeat the test. Make sure the IR ports on the
reflector and test computers are lined up.
Restart the reflector unit. Replace the
motherboard.
Dock Tests
9071h –
9073hUpdate the BIOS in the computer and
expansion base. Replace the expansion base.
9075h –
907ChReplace the expansion base.
907Eh Update BIOS in computer and expansion base.
Replace the expansion base.
907Fh Repeat the test.
9080h Make sure the computer is docked properly,
then repeat the test.
9082h Repeat the test with a known good computer.
Replace the expansion base.
9085h Reset the computer and expansion base, then
repeat the test. 
						

							HP Omnibook 500 Troubleshooting and Diagnostics 3-25
CodeSuggestions
9088h Replace the expansion base.
Hard Disk Tests
9602hFailure may occur soon. Back up data and
replace the hard disk.
9603hPerform the IDE disk test (in the Advanced
section). If other errors occur, follow the
instructions for those errors.
9604h Back up data if possible. Use a Recovery CD
to restore the original factory configuration,
then reinstall applications.
9605h –
9606hRun the full HDD test. Use a Recovery CD to
restore the original factory configuration.
9607h Back up data, then reformat the hard disk.
Replace the hard disk.
9640h Failure may occur soon. Back up data and
replace the hard disk.
9641h Back up data if possible, and replace hard disk.
CodeSuggestions
9642h Perform the IDE disk test (in the Advanced
section). If other errors occur, follow the
instructions for those errors.
9643h Failure may occur soon. Back up data and
replace the hard disk.
9644h Back up data if possible, and replace hard disk.
9645h –
9646hBack up data if possible, then reinstall
applications. Use a Recovery CD to restore the
original factory configuration.
9647h –
9648hMake sure the hard disk is properly installed.
964Ah The hard disk is password-protected, and so
can’t be tested.
964Bh –
964ChReplace the hard disk. 
						

							3-26 Troubleshooting and Diagnostics HP Omnibook 500
Power-On Self-Test
  Note
 
If Quiet Boot is enabled in BIOS Setup (the default setting), press ESC during boot to see POST
messages.
The POST (Power-On Self-Test) is a series of initialization routines and diagnostic tests that the
system BIOS runs when the computer boots. The system BIOS will not boot the operating system if
the system memory, CPU, DMA, or interrupt controller fails the POST diagnostic tests. POST
progress is indicated by a sequence of codes, and error messages are displayed if possible.
You should not necessarily interpret the failure of one or more POST tests as a hardware, software, or
firmware failure. If an error message appears, 
confirm the problem using other diagnostic tools. Not
all POST messages indicate a hardware, software, or firmware failure—some messages are for
information only.
First, confirm the failure by performing a “clean” boot. If the computer fails to restart with a clean
boot, it requires repair.
 1.
 Remove all accessories, including expansion base, external floppy drive, PC Cards, printer,
external monitor, pointing device, and keyboard.
 2.
 Provide “clean” AC power—no auto adapter or unusual AC adapter configuration.
 3.
 Press the system-off switch to start the computer from a known state.
If the BIOS detects a terminal error condition, it halts POST after issuing a terminal error beep code
(see the following table). The beep code indicates the POST routine in which the terminal error
occurred.
 Table 3-4. POST Terminal-Error Beep Codes
Beep Codes*POST Description
1 One short beep before boot.
1-2 Search for option ROMs.
1-2-2-3 BIOS ROM checksum.
1-3-1-1 Test DRAM refresh.
1-3-1-3 Test NS87570 Keyboard Controller (part of the motherboard).
1-3-4-1 RAM failure on address line 
xxxx.
1-3-4-3 RAM failure on data bits 
xxxx of low byte of memory bus.
1-4-1-1 RAM failure on data bits 
xxxx of high byte of memory bus.
2-1-2-3 Check ROM copyright notice.
2-2-3-1 Test for unexpected interrupts.
1 long-2 short Improper video configuration or external ROM checksum failure (replace the
motherboard).
1 long-5 short Display settings and EEPROM settings do not match (reprogram the EEPROM).
* Up to four groups of short beeps, except as noted.
The following table lists POST messages and explanations for reported problems. If the system fails
after you make changes in BIOS Setup, reset the computer, enter BIOS Setup, and install the defaults
or correct the error. 
						

							HP Omnibook 500 Troubleshooting and Diagnostics 3-27
 Table 3-5. POST Messages
MessageDescription
0200 Failure Fixed Disk
The hard disk is not working or is not configured properly. Make sure the disk is installed
properly. Use BIOS Setup to make sure the hard disk type is correctly identified.
0210 Stuck key
A key is stuck on the keyboard.
0211 Keyboard error
The keyboard is not working.
0212 Keyboard Controller Failed
The keyboard controller failed its test. The motherboard may need to be replaced (the
motherboard contains the keyboard controller).
0213 Keyboard locked – Unlock key switch
Unlock the system to proceed.
0220 Monitor type does not match CMOS – Run SETUP
The monitor type is not correctly identified in BIOS Setup.
0230 Shadow RAM Failed at offset: nnnn
Shadow RAM failed at offset nnnn of the 64k block at which the error was detected.
0231 System RAM Failed at offset: nnnn
System RAM failed at offset nnnn of in the 64k block at which the error was detected.
0232 Extended RAM Failed at offset: nnnn
Extended memory is not working or is not configured properly at offset nnnn. Update to the
latest BIOS version.
0250 System battery is dead – Replace and run SETUP
The CMOS clock battery indicator shows that the battery is dead. Connect the AC adapter for
at least 24 hours; replace the CMOS battery; replace the motherboard.
0251 System CMOS checksum bad – Default configuration used
System CMOS has been corrupted or modified incorrectly, perhaps by an application that
changes data stored in CMOS. The BIOS installed default Setup values. If you do not want
these values, enter Setup and enter your own values. If the error persists, check the CMOS
battery. Connect the AC adapter for at least 24 hours; replace the CMOS battery; replace the
motherboard.
0260 System timer error
The timer test failed. Replace the motherboard.
0270 Real time clock error
The real-time clock failed the BIOS test. The motherboard may need to be replaced.
0280 Previous boot incomplete – Default configuration used
The previous POST did not complete successfully. POST loads default values and offers to
run BIOS Setup. If the failure was caused by incorrect values and they are not corrected, the
next boot will likely fail. This error is cleared the next time the system is booted.
0281 Memory Size found by POST differed from CMOS
The memory size found by POST differed from CMOS.
02B0 Diskette drive A error
02B1 Diskette drive B error
Drive A: or B: is present but fails the BIOS POST diskette tests. Make sure the drive is
defined with the proper disk type in BIOS Setup, and that the drive is installed correctly.
02B2 Incorrect Drive A type – run SETUP
The type of floppy drive A: is not correctly identified in BIOS Setup.
02B3 Incorrect Drive B type – run SETUP
The type of floppy drive B: is not correctly identified in BIOS Setup.
02D0 System cache error – Cache disabled
The RAM cache failed and BIOS disabled the cache. The motherboard may need to be
replaced. A disabled cache slows system performance considerably.
02F0: CPU ID:
CPU socket number for Multi-Processor error.
02F4: EISA CMOS not writeable
ServerBIOS2 test error: cannot write to EISA CMOS.
02F5: DMA Test Failed
ServerBIOS2 test error: Cannot write to extended DMA (Direct Memory Access) registers.
02F6: Software NMI Failed
ServerBIOS2 test error: Cannot generate software NMI (Non-Maskable Interrupt). 
						

							3-28 Troubleshooting and Diagnostics HP Omnibook 500
MessageDescription
02F7: Fail-Safe Timer NMI Failed
ServerBIOS2 test error: Fail-Safe Timer takes too long.
device
 Address Conflict
Address conflict for the specified device.
Allocation Error for: device
Run the ISA or EISA Configuration Utility to resolve a resource conflict for the device.
CD ROM Drive
CD-ROM Drive identified.
Entering SETUP ...
Starting the BIOS Setup program
Failing Bits: nnnn
The hex number nnnn is a map of the bits at the RAM address that failed the memory test.
Each 1 in the map indicates a failed bit. See errors 230, 231, or 232 above for offset address
of the failure in System, Extended, or Shadow memory.
Fixed Disk n
Fixed disk n (0–3) identified.
Invalid System Configuration Data
Problem with NVRAM (CMOS) data.
I/O device IRQ conflict
An I/O device has an IRQ conflict.
PS/2 Mouse Boot Summary Screen:
A PS/2 mouse is installed.
nnnn
 kB Extended RAM Passed
Where nnnn is the amount in KB of SDRAM successfully tested.
nnnn
 Cache SRAM Passed
Where nnnn is the amount in KB of system cache successfully tested.
nnnn
 kB Shadow RAM Passed
Where nnnn is the amount in KB of shadow RAM successfully tested.
nnnn
 kB System RAM Passed
Where nnnn is the amount in KB of system SDRAM successfully tested.
Operating system not found
No operating system was found on drive A or drive C. Enter BIOS Setup and see if the hard
disk and drive A: are properly identified.
Parity Check 1 nnnn
A parity error was found in the system bus. (Parity is a method for checking errors in binary
data: a parity error indicates that data has been corrupted.) The BIOS displays the address if
possible, and otherwise displays ????.
Parity Check 2 nnnn
A parity error was found in the I/O bus. The BIOS displays the address if possible, and
otherwise displays ????.
Press  to resume,  to Setup,  for previous
Displayed after any recoverable error message. Press  to resume the boot process, or
 to enter BIOS Setup and change the settings. Press  to display the previous
screen (usually an initialization error of an Option ROM, such as an add-on card). Write down
and follow the information shown on the screen.
Press  to enter Setup
Optional message displayed during POST.
PS/2 Mouse:
PS/2 mouse identified.
System BIOS shadowed
System BIOS was copied to shadow RAM.
UMB upper limit segment address: nnnn
Displays the address nnnn of the upper limit of the Upper Memory Blocks, indicating released
segments of the BIOS that can be reclaimed by a virtual memory manager.
Video BIOS shadowed
Video BIOS was copied to shadow RAM.