PC freezing within 2-3 minutes of booting or restarting on its own

Ok. I think I have found the problem. The event manager showed a number of drivers failing to start, among those was sptd. I checked the net and found out it is associated with daemon tools. I went to msconfig and disabled it from starting it at start-up. This was on Thursday night. So far have not experienced any more problem. My question is, how do I get back to using daemon tools for I need to use it quite often. Will re-installing it suffice or do I need to do something more?

Please remove any CD/DVD virtualization software, such as Daemon Tools/Alcohol 120%, as they use a driver called sptd.sys that is known to cause BSODs. Use add/remove programs to remove the software. After removing the software, use the sptd.sys uninstaller to remove sptd.sys from the system.

I prefer TotalMounter as my CD/DVD virtualization software as it allows me to burn images to a virtual CD/DVD if I just want an ISO file instead of a disc, and it is free.

Many use MagicISO - Convert BIN to ISO, Create, Edit, Burn, Extract ISO file, ISO/BIN converter/extractor/editor as well, which is also free.

Ok. But can I use these softwares to mount image files like I can do with Daemon Tools?

You can. :)