Today I upgraded the BIOS of a DH67CF motherboard. The upgrade was successful (at least that's what the messages on the screen said), but after the system rebooted the system became unusable.
Prior BIOS Version: BLH6710H.86A.0105.2011.0301.1654
New BIOS Version: BLH6710H.86A.0156.2012.0615.1908
Upgrade Method: F7 at POST using BIOS upgrade method from USB stick.
Symptoms after upgrade:
- No video signal detected
- No beeping from PC speaker
- Fans spin up
- HDDs spin up
Steps Attempted:
- Disconnected CMOS battery for 20 minutes -- no change.
- Removed BIOS jumper to attempt recovery -- no change (USB stick with .BIO was never accessed, and no video signal detected)
- Re-connected BIOS jumper -- no change.
At this point it seems that my motherboard has been bricked, and various searches indicate that this has happened with prior BIOS revisions. Is 156 another bad version? Maybe the fact that I was jumping from 105 -> 156 could be the problem, but I didn't see any intermediate BIOS version upgrade recommendation.
Any help/advice/suggestions is/are appreciated.