Attempting to install call of duty black ops my computer I had to install couple times before I got it working. during the installs my computer would sometimes freeze, then I would have to force a restart by killing power an start install over. I eventually got it installed but later on while playing I noticed my computer very laggy so I restarted it. Now it will load the bios and come to the screen vista has recovered from a error blah blah blah. When trying to start it normal it trys to start but gets a quick blue screen before ever making it to the login screen and restarts. Trying to load it in safe node it freezes at Avgidsvx or something for a few seconds then restarts. I put in the windows vista upgrade cd and attempt to recover and repair but it can find a operating system. When trying to re-install windows it stops and claims "windows setup could not reinitalize the deployment engine". Any help would be great feel very trapped and frustrated. Type this ony iPhone sorry if it's hard to read...