Hi, i have just spent 450 pounds on parts for a new system! only to find once i put them all together that it doesnt work!, the fans spin for 1 second and it just stops!, i've tried everything i can think of, i have removed the motherboard psu graphics card and a switch out of the tower to try it and that didnt work either!! any help would be massively aappriciated!!

Amd athlon x2 7750 Black
Asus M2N68 Motherboard
seagate 500gb hdd
4gb corsair memory ddr2
xfx Geforce 9500gt 1gb ddr2
sumvision powerx 600w psu
lite-on dvdrw
First try this checklist:

Then try these troubleshooting tips:

Pull everything except the CPU and HSF. Boot. You should hear a series of long single beeps indicating memory problems. Silence here indicates, in probable order, a bad PSU, motherboard, or CPU - or a bad installation where something is shorting and shutting down the PSU.

To eliminate the possiblility of a bad installation where something is shorting and shutting down the PSU, you will need to pull the motherboard out of the case and reassemble the components on an insulated surface. This is called "breadboarding" - from the 1920's homebrew radio days. I always breadboard a new or recycled build. It lets me test components before I go through the trouble of installing them in a case.

Example of breadboarding:

If you get the long beeps, add a stick of RAM. Boot. The beep pattern should change to one long and two or three short beeps. Silence indicates that the RAM is shorting out the PSU (very rare). Long single beeps indicates that the BIOS does not recognize the presence of the RAM.

If you get the one long and two or three short beeps, test the rest of the RAM.

If good, install the video card and any needed power cables and plug in the monitor. If the video card is good, the system should successfully POST (one short beep, usually) and you will see the boot screen and messages.

Note - an inadequate PSU will cause a failure here or any step later.
Note - you do not need drives or a keyboard to successfully POST (generally a single short beep).

If you successfully POST, start plugging in the rest of the components, one at a time.



doesnt beep at all, same thing happens just one second of the fan spinning before it turns off!


i got a funny feeling its the motherboard, will send it ack and get it replaced, thanks anyway guys!