Acer Aspire 5741g Service Guide

Chapter 4131
No Display Issue
If the Display doesn’t work, perform the following actions one at a time to correct the problem. Do not replace 
a non-defective FRUs:
No POST or Video
If the POST or video doesn’t display, perform the following actions one at a time to correct the problem.
1.Make sure that the internal display is selected. On this notebook model, switching between the internal 
display and the external display is done by pressing Fn+F5. Reference Product pages for specific model...

132Chapter 4
Abnormal Video Display
If video displays abnormally, perform the following actions one at a time to correct the problem.
1.Reboot the computer.
2.If permanent vertical/horizontal lines or dark spots display in the same location, the LCD is faulty and 
should be replaced. See “Disassembly Process” on page 41.
3.If extensive pixel damage is present (different colored spots in the same locations on the screen), the LCD 
is faulty and should be replaced. See “Disassembly Process” on page 41....

Chapter 4133
LCD Failure
If the LCD fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRUs:
Built-In Keyboard Failure
If the built-in Keyboard fails, perform the following actions one at a time to correct the problem. Do not replace 
a non-defective FRUs: 

134Chapter 4
TouchPad Failure
If the To u c h P a d doesn’t work, perform the following actions one at a time to correct the problem. Do not 
replace a non-defective FRUs:
Internal Speaker Failure
If the internal Speakers fail, perform the following actions one at a time to correct the problem. Do not replace 
a non-defective FRUs: 

Chapter 4135
Sound Problems
If sound problems are experienced, perform the following actions one at a time to correct the problem.
1.Reboot the computer.
2.Navigate to Start´ Control Panel´ System and Maintenance´ System´ Device Manager. Check 
the Device Manager to determine that:
• The device is properly installed. 
• There are no red Xs or yellow exclamation marks. 
• There are no device conflicts. 
• No hardware is listed under Other Devices.
3.Roll back the audio driver to the previous version, if...

136Chapter 4
HDD Not Operating Correctly
If the HDD does not operate correctly, perform the following actions one at a time to correct the problem. 
1.Disconnect all external devices.
2.Run a complete virus scan using up-to-date software to ensure the computer is virus free. 
3.Run the Windows Vista Startup Repair Utility:
a.insert the Windows Vista Operating System DVD in the ODD and restart the computer. 
b.When prompted, press any key to start to the operating system DVD. 
c.The Install Windows screen...

Chapter 4137
ODD Failure
If the ODD fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRUs:
ODD Not Operating Correctly
If the ODD exhibits any of the following symptoms it may be faulty:
• Audio CDs do not play when loaded 
• DVDs do not play when loaded 
• Blank discs do not burn correctly 
• DVD or CD play breaks up or jumps 
• Optical drive not found or not active: 
• Not shown in My Computer or the BIOS setup 
• LED does not flash when the...

138Chapter 4
a.Double-click lDE ATA/ATAPI controllers. If a device displays a down arrow, right-click on the device 
and click Enable.
b.Double-click DVD/CD-ROM drives. If the device displays a down arrow, right-click on the device and 
click Enable.
c.Check that there are no yellow exclamation marks against the items in l D E  ATA / ATA P I  c o n t r o l l e r s. If 
a device has an exclamation mark, right-click on the device and uninstall and reinstall the driver.
d.Check that there are no yellow...

Chapter 4139
b.Double-click IDE ATA/ATAPI controllers, then right-click ATA Device 0. 
c.Click Properties and select the Advanced Settings tab. Ensure that the Enable DMA box is 
checked and click OK. 
d.Repeat for the other ATA Devices shown if applicable.
Drive Not Detected
If Windows cannot detect the drive, perform the following actions one at a time to correct the problem.
1.Restart the computer and press F2 to enter the BIOS Utility. 
2.Check that the drive is detected in the ATAPI Model Name field...

140Chapter 4
Wireless Function Failure
If the WLAN fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRUs:
Thermal Unit Failure
If the Thermal Unit fails, perform the following actions one at a time to correct the problem. Do not replace a 
non-defective FRUs: