Computer won't turn on. PSU is fine.

Hi, 2 weeks ago I built my very first pc, everything was working fine, no problems until today.

I was using the computer 8 hours ago and when I tried powering it on today, everything turned on for a split second and then powered off, and it has not been working since.

I did the "Paperclip test" on my PSU and it seemed to be working fine with the fans spinning.
But still after plugging all the components back in to my PSU, there is still no signs of life.

I don't know what caused this to happen and need advice on what to do, or what hardware might be faulty.


My Build

Case: Zalman Z9 +
PSU : OCZ ZS Series 550w 80+
GPU : Gigabyte GTX 560
MOBO: Gigabyte GA-Z68X-UD3P-B3
HDD: Samsung Spinpoint 320GB
CPU: Intel i5 2500k 3.3
3 answers Last reply
More about computer turn fine
  1. Ok, I ran some tests and found out that when i touch the CMOS with a screwdriver, everything powers on for a split second, then powers off. Motherboard LED lights up for a split second also , so I think the motherboard is ok. Also I have breadboarded It, so it is not short-circuiting. But still really need help with fixing this.
  2. take out the CMOS battery and unplug the computer from the wall socket
    let it sit for 5-10 minutes
    put the battery back in
    see if this helps
  3. I now feel like a idiot. The CMOS Battery somehow was upside down. Now that I have flipped it, Plugged it in and BAM! Powered on, working fine. Thanks For The Assist!
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