Posted October 15, 200816 yr I have had BSOD crashes which reported a DRIVER_POWER_STATE_FAILURE. Also, my Shadow Protect backup program would crash and never complete. I found a Microsoft KB that said to check for unsigned files, using sigverif.exe, supplied with Vista Ultimate 64. At the top of the list was rivatuner64.sys v.2.04 9/25/07. I uninstalled it and, so far, haven't had any more crashes. Further, for the first time in about two months, I have been able to run my Shadow Protect program and have it complete successfully. The KB indicated that programs are supposed to respond to OS signals when it goes into hibernate, but that some unsigned programs are not equipped to do that. So, Vista crashes.
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