eMachine won't start up/stay on.

[g1bb0]

My eMachine crashed whilst downloading some software. Now it will turn on to show the first e logo screen and then cut out straight away. It then tries to reboot itself again and again but never gets past the e logo screen. Any ideas on how to get it to work?! I've tried pressing F8 to get it to start in safe mode but with no luck. Thanks

 

[hang-the-9]

Unplug it from the wall, push in the power button a few times as if you are turnig it on, then reset the bios by removing the CMOS battery or 15 seconds. While the case is open check over the motherboard for any issues like a lose cable or bad capacitor (if any are puffy or showing black stuff on top you need a new motherboard). If motherboard and cables are good, plug it in and try it again.