Acer Aspire 5820T Series - BIOS Recovery; BIOS Recovery by Crisis Disk; Steps for BIOS Recovery from USB Storage

Chapter 4 155
USB Failure (Right up/down side)
If the rightside USB port fails, perform the following actions one at a time to correct the problem. Do not
replace non-defective FRUs:
Other Failures
If the VGA board, LAN Port, external MIC or Speakers, PCI Express Card, 5-in-1 Card Reader or Volume
Wheel fail, perform the following general steps to correct the problem. Do not replace non-defective FRUs:
1. Check whether the drive is OK.
2. Verify that the Test Fixture is OK.
3. Swap the mainboard and retest.
Start
Check USB/B to
M/B cable
Re-assemble the
USB/B cable to M/B
OK
NG
Check USB/B
OK
Swap USB/B and
USB cable
OK
NG
Swap M/B
Start
Check USB/B to
M/B cable
Re-assemble the
USB/B cable to M/B
OK
NG
Check USB/B
OK
Swap USB/B and
USB cable
OK
NG
Swap M/B