w29n51.sys BSODs on XP

Note: this content originally from http://mygreenpaste.blogspot.com. If you are reading it from some other site, please take the time to visit My Green Paste, Inc. Thank you.

Twice now in as many months I have been the proud recipient of a BSOD on XP. The crashes were identical to each other with only various addresses being different (modules loaded into a different location and the like). They appear to have been caused by a bug in w29n51.sys; the crashes are of the IRQL_NOT_LESS_OR_EQUAL (a) variety. w29n51.sys is the "Intel® Wireless LAN Driver". Admittedly, I'm running a version that is likely not the latest. But it is interesting that googling the relevant stack entries (w29n51+0x1291, w29n51+0xa6af) turns up no hits. Also of interest is that the driver file is larger than 3 MB - more than 3 times the size of the next largest driver file in %systemroot%\system32\drivers... Strings does show a large number of verbose log-type messages that one can presumably cause to be logged via some configuration setting, as well as "tabular" data.

Of course, it is also disturbing that at the time of these crashes, the wireless hardware was disabled on this laptop... Confused

1 comment:

alex said...


Were you eventually able to resolve the problem with the w29n51.sys causing BSOD?

My system started crashing recently as well due to the same errror:
(- also doesn't happen often)
(- also can happen with deactivated wireless card.)

Thank you, --alex