i loled, misread the title for this:

well anyway, sounds like driver or OS problem, try updating every single driver, if that doesnt solve it, try reinstalling your OS.
you need to say the FF:
- Your OS name and version
- Utorrent name and version
- Computer Specifications like Processor, motherboard model and etc.(might be your PC itself has the issue, ie. using a sandybridge without the B3 motherboard, seriously dangerous)
- Anti-Virus name(if you dont have one then "you know what" is killing your PC)
- Are you using Raid? which type?