Bsod dpc_watchdog violation

Your Atheros AR5B91 wireless network adapter driver has been flagged. It's old and needs updating, check here for an updated version.

Code:

BugCheck 133, {0, 501, 500, 0}

*** WARNING: Unable to verify timestamp for athr.sys
*** ERROR: Module load completed but symbols could not be loaded for athr.sys
Probably caused by : athr.sys ( athr+22e2f )

0: kd> lmvm athr
start    end        module name
938a0000 939cd000   athr     T (no symbols)           
    Loaded symbol image file: athr.sys
    Image path: \SystemRoot\System32\drivers\athr.sys
    Image name: athr.sys
    Timestamp:        Mon Oct 05 17:31:48 2009 (4ACA1F74)
    CheckSum:         00130184
    ImageSize:        0012D000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

Yeah that should be fine, that Qualcomm site is a nightmare to navigate isn't it? Let us know how you go.

Personally I'd try the 8 version, you can always uninstall and try the 7 version if that one doesn't play nice.