Hi All, So I've been having a strange problem with my Toshiba Satellite laptop lately, running Windows 8.1. Been having random BSODs, usually with a DRIVER_POWER_STATE_FAILURE message. I took a look at the dump files using BlueScreenView, and in almost every occurrence, it flags the ntoskrnl.exe file. I also troubleshot with the WinDBG tool, and it pointed to the following files:ntoskrnl.exentkrnlmp\Driver\tunnelinstb64.sysFrom what I've seen, the BSOD happens either during shutdown, or when I am not doing anything, and the computer is just sitting. I've also noticed that the computer sometimes freezes when it goes to enter sleep mode, and most of the time, it won't enter sleep mode at all (the screen turns off, but the computer is still awake). Wondering if this is related. Attached are all of the files from the W7F tool. Thanks so much in advance!