I have just finished upgrading my wife's PC with some surplus components from an older unit of mine. I upgraded her CPU with a 2.2 Gigahertz Athlon processor, a Gigabyte CPU cooler, her Ram to 2 gigabytes, a good, name brand 360 watt PS, and a XFX 6 series video card. After checking all the connections, I pushed the "on" button. The Cooler lit up with it's standard blue LED's and then everything stopped. Nada, zipp, finito. I tried again 5 minutes later and got the same result. Her old PS was a generic brand 300 watt unit. Her MB is a MSI KM4M micro ATX. And her video card was an Nvidia 5600. She loves to play Runescape and I'm reluctant to let her use my PC. HELP!!!!!!
More aboutsystem triping startup
If you connected the 4-pin CPU power and it won't power up, does it work if you use the older 300W PSU?
Apart from the main large power cable from power supply to motherboard, did you remember to connect the seperate 12v 4pin yellow/black cable from power supply to motherboard