Please note the "C" after the 0x in the STOP error.
These are a different class of error.
You can find more info (but not much) on this one here: BSOD Index
As this is a DLL initialization error - I'd guess that it's a problem with a dll used by PCANUser.exe
The starting place for a fix is to uninstall the program associated with PCANUser.exe
If that stops the BSOD's, then that was the cause. Reinstalling a freshly downloaded, Windows 7 compatible copy of the program can be done once the cause is determined.