Just purchased a new processor for my PC, after messing about with removing the fan (Arctic Cooler 7) and fitting the new processor, refit the fan and now when I turn the PC on it all kicks in then shuts down again after 2 - 3 seconds.
Following this it boots back up and repeats over and over until I finally turn it off at the power.
I went out and picked up some thermal paste, unscrewed the fan again (what a bitch), put some paste down and fitted everything back together. Same problem.
I have read up on some topics around the net and it could be any one of a billion things, just hoped somebody may have experienced the same thing and have some insight, thanks
Intel Core 2 Quad 2.5 Ghz
Corsair Vengeance 8Gb DDR3 RAM (2x4Gb)
Asus DDR3 Mobo
XFX Radeon HD 5450 1024Mb
Windows 7 Ultimate