Hi! My pc shuts on then off repeatedly, I was trying to install windows 7 on my pc, but 50% in the installation my pc shutsdown, and now its just kinda restarting all the time.
Find out the brand of the PSU. If it can't handle the load (i.e. it isn't really good for its label, like a cheap Diablotek or Logisys PSU-shaped object), you would have those symptoms.