New keyboard gives a BSOD on pressing a key

May 15, 2015
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I recently bought a new USB keyboard (GK-004 Silvio) and a new USB Mouse (Dragon War Thor), and I seem to be experiencing BSODs with my new keyboard. (had been using PS/2 keyboard and mouse before with no problems till date). I then updated all of my drivers using Driver Booster, and the problem stopped, until I restarted for the next time. Now as soon as I press a key after logging in, it gives me a BSOD right away and it doesn't let me see the message (as it did for the very first time, and it also restarts too just right after the BSOD). I got lucky one time and saw that the message was:
"DRIVER_IRQL_NOT_LESS_OR_EQUAL" due to 'kbdclass.sys'

1. I've run for a virus scan and I couldn't find any threats.
2. I've cross checked that all my drivers are up to date. There were no specific keyboard drivers/softwares included with my keyboard nor could I find any online.
3. I've been self-logging myself with the help of Spyrix for a few days due to personal reasons. The BSOD occurs irrespective of Spyrix logging/running and as I mentioned, it worked perfectly fine for a whole day until I restarted during which Spyrix was working. (It doesn't crash with my old PS/2 keyboard)
4. I've run TDSSKiller and found no threats.
5. My USBs currently include: Speakers, XBox 360 Controller, New USB Mouse (which seems to be working without any problem)...I don't suppose any of those could cause any problems.
6. I've done a sfc /scannow, it said that it found some corrupt files and was unable to repair them. Maybe I should do it in safemood or with a W7 DVD inserted? After the restart, the issue wasn't resolved.
7. The keyboard works fine in Safe Mood.
8. There are currently no dumps in my minidump folder.

Below is a link to dm_log_collector log..hope it helps. Thanks. :)


all ball, no chain
Feb 13, 2009
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Likely a conflict between kbdclass and another driver. A mini dump of a crash or two would be useful.

To enable minidumps, open Command Prompt with Admin privileges and enter this command:
wmic RECOVEROS set DebugInfoType = 3
May 30, 2015
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1) Improper driver that installed previously which cannot removed properly or newly installed driver cause this issue!
2) Recently installed hardware or software(keyboard)
3) what about startup repair?


Mar 1, 2012
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It appears that the BIOS is very old:
BiosMajorRelease = 8
BiosMinorRelease = 12
BiosVendor = American Megatrends Inc.
BiosVersion = 0020
BiosReleaseDate = 02/27/2009

Normally I wouldn't recommend updating the BIOS, but you are trying to attach a modern KB to a motherboard that has a 2009 BIOS.
Your motherboard support page HERE.

BEWARE that updating the BIOS can brick your motherboard, so take it to a tech if you are not sure yourself.

Hope this helps.

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