Daemon Tools (and Alcohol % software) are known to cause BSOD's on some Win7 systems (mostly due to the sptd.sys driver, although I have seen dtsoftbus01.sys blamed on several occasions).
Please un-install the program,
then use the following free tool to ensure that the troublesome sptd.sys driver is removed from your system (pick the 32 or 64 bit system depending on your system's configuration):
[DEL] Link Removed [/DEL] Link broken as of 21 Jul 2012
New link (15 Aug 2012):
Link Removed (pick the appropriate version for your system and select "Un-install" when you run it).
Alternate link:
Disc-Tools.com
Manual procedure here:
Link Removed - Invalid URL