Lenovo B70 80 Laptop User Guide

							Chapter 4. Troubleshooting
27
Other problems
Your computer does not 
respond.To turn off your computer, press and hold the power 
button for 4 seconds or more. If the computer still 
does not respond, remove the battery pack and the 
AC power adapter. 
Your computer might lock when it enters sleep mode 
during a communication operation. Disable the sleep 
timer when you are working on the network.
I need to start the computer 
from a connected device, 
but the device does not 
appear on the boot device 
list.Check the boot mode setting in the BIOS setup utility. 
If Boot Mode is set to UEFI, make sure that the 
device or the medium in the device supports UEFI 
boot. If the device or the medium in the device does 
not support UEFI boot, set Boot Mode to Legacy 
Support. If the device still does not appear in the 
boot device list, replace with a new device or 
medium.
The connected external 
device does not work. Do not connect or disconnect any external device 
cables other than USB while the computer power is 
on; otherwise, you might damage your computer.
When using a high power consumption external 
device such as an external USB optical disk drive, use 
an external device power adapter. Otherwise, the 
device may not be recognized, or system shut down 
may result. 
						

							28
Appendix. CRU instructions
Replacing the battery  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To replace the battery, do the following:
1Turn off the computer. Disconnect the AC power adapter and all cables 
from the computer.
2Close the computer display, and turn the computer over.
3Unlock the manual battery latch  . Slide the spring-loaded latch to the 
unlocked position to eject the battery pack  . Lift up the inner edge of 
the battery pack, pivoting it on the outer edge  . Slide the battery pack 
in the indicated direction to remove it  . 
4Install a fully charged battery.
5Slide the manual battery latch to the locked position.
6Turn the computer over again. 
7Connect the AC power adapter and the cables to the computer.
Notes:
The CRU service is only applicable to certain countries.
Make sure the battery has been removed before replacing any devices.
Note: Use only the battery provided by Lenovo. Any other battery could ignite or explode.
a
b
c
d
d
c
d
a
b 
						

							Appendix. CRU instructions
29
Replacing the hard disk drive - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
You can increase the storage capacity of your computer by replacing the hard 
disk drive with one of greater capacity. You can purchase a new hard disk 
drive from your reseller or Lenovo marketing representative.
The hard disk drive is very sensitive. Incorrect handling may cause damage 
and permanent loss of data on it. Before removing the hard disk drive, make 
a backup copy of all the information on it, and then turn the computer off. 
Never remove the drive while the system is operating in sleep mode. 
Notes:
Replace the hard disk drive only if you upgrade it or have it repaired. The connectors and 
bay of the hard disk drive were not designed for frequent changes, or drive swapping.
The preinstalled software is not included on an optional hard disk drive.
Handling a hard disk drive
Do not drop the drive or subject it to physical shocks. Put the drive on a material, 
such as soft cloth, that absorbs the physical shock.
Do not apply pressure to the cover of the drive. 
Do not touch the connector. 
						

							30
Appendix. CRU instructions
To replace the hard disk drive, do the following:
1Turn off the computer. Disconnect the AC power adapter and all cables 
from the computer.
2Close the computer display, and turn the computer over.
3Remove the battery pack. For details, see “Replacing the battery” on page
28.
4Remove the Hard disk drive/Memory/Central processing unit/Mini PCI 
Express Card slot compartment cover.
a. Loosen the screws that secure the compartment cover  .
b. Remove the compartment cover  .
a
b
b
a
a 
						

							Appendix. CRU instructions
31
5Remove the frame fixing screws  .
6Pull the tab in the direction shown by arrow  .
c
c
c
c
c
d
d 
						

							32
Appendix. CRU instructions
7Take out the hard disk drive secured in a metal frame  .
8Remove the screws and detach the metal frame from the hard disk drive.
9Attach the metal frame to a new hard disk drive and tighten the screws.
0Put the hard disk drive gently into the hard disk drive bay with the tab
facing upwards and the connectors facing each other, then push it firmly
into space.
AReinstall the frame fixing screw.
BReinstall the compartment cover and tighten the screws.
CReinstall the battery pack.
DTurn the computer over again. 
EConnect the AC power adapter and the cables to the computer.
e
e 
						

							Appendix. CRU instructions
33
Replacing memory  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
You can increase the amount of memory in your computer by installing a 
double-data-rate three  low voltage synchronous dynamic random access 
memory (DDR3L SDRAM)-available as an option in the memory slot of your 
computer. DDR3L SDRAMs are available in various capacities.
 To replace a DDR3L SDRAM, do the following: 
1Touch a metal table or a grounded metal object to reduce any static 
electricity in your body, which could damage the DDR3L SDRAM. Do
not touch the contact edge of the DDR3L SDRAM. 
2Turn off the computer. Disconnect the AC power adapter and all cables
from the computer.
3Close the computer display, and turn the computer over. 
4Remove the battery pack. For details, see “Replacing the battery” on page
28.
5Remove the Hard disk drive/Memory/Central processing unit/Mini PCI
Express Card slot compartment cover.
a. Loosen the screws that secure the compartment cover  .
b. Remove the compartment cover  .
Note: Use only the memory types supported by your computer. If you incorrectly install 
optional memory, or install an unsupported memory type, a warning beep will sound 
when you try to start the computer.
a
b
b
a
a 
						

							34
Appendix. CRU instructions
6If two DDR3L SDRAMs are already installed in the memory slot, remove 
one of them to make room for the new one by pressing out on the latches 
on both edges of the socket at the same time. Be sure to save the old 
DDR3L SDRAM for future use.
7Align the notch of the DDR3L SDRAM with the protrusion of the socket 
and gently insert the DDR3L SDRAM into the socket at a 30-45° angle.
8Push the DDR3L SDRAM inward toward the socket until the latches on 
both edges of the socket are pushed into the closed position.
9After aligning the attachment clips with their matching gaps, reinstall the 
compartment cover.
0Reinstall and tighten the screws.
AReinstall the battery.
BTurn the computer over again.
CConnect the AC power adapter and the cables to the computer.
To make sure that the DDR3L SDRAM is installed correctly, do as follows: 
1Turn the computer on. 
2Hold Fn + F2 during startup. The BIOS setup utility screen opens. The 
System Memory item shows the total amount of memory installed in 
your computer. 
aa
b
b
a 
						

							Appendix. CRU instructions
35
Replacing the fan assembly  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
To replace the fan assembly, do the following:
1Turn off the computer. Disconnect the AC power adapter and all cables
from the computer.
2Close the computer display, and turn the computer over.
3Remove the battery pack. For details, see “Replacing the battery” on page
28.
4Remove the Hard disk drive/Memory/Central processing unit/Mini PCI
Express Card slot compartment cover.
a. Loosen the screws that secure the compartment cover  .
b. Remove the compartment cover  .
a
b
b
a
a 
						

							36
Appendix. CRU instructions
5Detach the fan connector in the direction shown by arrow   and loosen
the three screws   to lift the fan assembly.c
d
c
d
d
d