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Old 05-20-2016, 11:58 AM
Location: 10110001010110100
6,385 posts, read 10,849,507 times
Reputation: 5589


Just a heads up to the Windows 8/10 users who have this particular Microsoft keyboard and started getting Blue Screen Of Death (BSOD) in the last month or so:

From my own experience and research, the problem seems to be between the recent update to the Windows keyboard driver (kbdclass.sys) and Microsoft's Wireless Keyboard Filter driver (wirelesskeyboardfilter.sys) that gets installed and used by this particular keyboard.

When the receiver for this keyboard is inserted, the filter entry gets installed in Device Manager and eventually caused the problem which is typically observed as early as the Windows Logon screen (if applicable) or after the user profile is loaded and user begins to type.

The problem was replicated on 2 completely different machines; a custom built mid tower with Windows 8.1 and an Intel NUC with a fresh Windows 10 image.

I am not saying this will definitely happen with every system but if you do have this keyboard and you start experiencing this problem, see if the BSOD displays kbdclass.sys as the culprit which points to the generic keyboard drivers Windows use but the real (hidden) culprit is wirelesskeyboardfilter.sys that his keyboard installs and uses.

My attempts to remove/uninstall/rolling back the aforementioned drivers were fruitless. If that keyboard's receive is plugged in and the keyboard is in use, the problem eventually reoccurred eventually.

Emergency/Temp workaround: User On Screen keyboard that can be access even on the logon screen (ease of access icon)

Real solution: If you need a wireless keyboard, get a different brand or a wired Microsoft keyboard.

PS. If you have the time, technical skills and patience, feel free to research and experiment to find a better solution but I didn't have the time. After an hour, I had to pull the plug!
Attached Thumbnails
Using A Wireless Comfort 5050 Keyboard and Getting BSODs?-whocrashed01.png   Using A Wireless Comfort 5050 Keyboard and Getting BSODs?-whocrashed02.png   Using A Wireless Comfort 5050 Keyboard and Getting BSODs?-kbdclass_sys-causing-bsod-01.png   Using A Wireless Comfort 5050 Keyboard and Getting BSODs?-kbdclass_sys-causing-bsod-02.png   Using A Wireless Comfort 5050 Keyboard and Getting BSODs?-kbdclass_sys-causing-bsod-03.png  

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