01-07-2012 08:10 PM
01-07-2012 08:33 PM
01-07-2012 09:08 PM
Since you just started getting this error, it would be worthwhile to use Windows System Restore to restore your system to a time before the issue manifested.
You are getting a STOP 0x9F bug check - DRIVER_POWER_STATE_FAILURE (http://msdn.microsoft.com/en-us/library/ff559329(v=VS.85).aspx)
It is likely caused by a driver installed on your system. If the restore to an earlier time fails to resolve the issue, we'll need to look more closely at what is installed on your system to identify the problem driver.
Here is an example of a user with the same problem that was able to locate the offending driver: http://www.sevenforums.com/crashes-debugging/197733-laptop-bsod-when-opening-lid-after-sleep-mode-er...
01-07-2012 09:24 PM
01-07-2012 11:09 PM
Don't think just of device drivers. Think of kernel mode drivers installed by applications (i.e. Antivirus, Antimalware, Firewall, Remote Access apps). It is also possible Windows Update installed a new core OS driver version that now conflicts with a previous driver installed on your system.
The easiest first troubleshooting step is to use Windows System Restore to restore your system to a time before the issue occurred (unless you turned it off).
01-08-2012 09:07 AM