Computer seems to power up, and then keeps resetting quickly.

Hello!

My computer I built myself in January. It's the 5th computer i've built. I will list the specs if you feel it will help.

What it seems to be doing, is it turns on, and then resets, and then resets, and then resets, and then sorta maybe gets somewhere (the monitor comes out of sleep) then goes back to sleep.

The power LED seems to be flicking on and off. The discs spin and stop and spin. The DVD rom LED blinks. The MB light is always on. The wireless reciever for the mouse and keyboard turns on.

At one point (the first time) I got the feeling maybe it was trying to boot from a CD, so i clicked it open, and it opened halfway and then turned off completley.

Also of note, I rarely shut this down. It was probably powered on without a shutdown for a good few months. Then I went away for the weekend and shut it down. Got back, went to turn it on and this happened. Nothing has changed, so I have no idea what this could be! I tried the RAM, i tried the CMOS battery. I checked the power cable. I havn't gone in and checked all the little ones, its late and i'm tired.

Any help is greatly appreciated however. So many thanks to those that can offer it.

Shawn

PSU. If you remove CDD, DVDD, HDD and booted from FD properly, roughly decided.

megumi has the right idea. I'm super new here but here's what I'd do.

Pull off everything (CPU and RAM only - no PCI/AGP, Hard drives, nothing) from the mainboard and see if the bio's boots properly.

If it still doesn't work - first check the power supply. Having it on that long could have affected it. Swap it with another power supply. If that power supply has the same result - try different RAM (borrow or use older/slower RAM). If no change - it's most likely your mobo.

If everything works fine with just ur mobo & ram - start putting things back on one at a time and find out which component is the culprit.

It doesn't take much... a brown out or electrical storm miles and miles away could have slightly zapped ur mobo into paralysis.

i am having the same problem .. plz tell me how did u solve this problem.