Let me start with my specifications !!
Processor : i3 540
Motherboard : Intel DH55PJ
GPU : ATI Radeon HD 5450 DDR3 1 GB
RAM : 4GB DDR3

PSU :Corsair 600GS

I been havin this problem fr a long time .
When i start my PC the lights dont come on . Id have to turn off the main switch and back on , only then the lights come . And then my PC works fine for about 8-10 hrs until it starts to restart like about every 15 mins or so . I checked the event log after every restart there was nothing of it .. Checked Device manager , BIOS settings CPU temp still havent found the problem fr this . I ran memtest86+ and it passed but with Windows Memory DIagnostic tool it says hardware problem !! So Plz help !!
Thank You in advance

Do you get any Blue screens or just restarts?

just restarts ...

Hello, I wish you posted in the correct subsection.

Download this http://www.mediafire.com/download.php?d53ohzo1ec6bxmw and run the tool as admin, attach the produced archive.

update the bios

do yu mean this ?!

Yes. It looks to me like you're having a problem with your BIOS.
First thing I'd recommend doing is taking out the CMOS battery (no 3 here http://www.intel.com/content/www/us...ard-dh55pj-interactive-layout-demo-video.html ) and see if that changes anything.

NO Change

Have you removed the battery without placing it back?

You should test temperatures.

Download this http://damage.vigilantesoftware.com/ and this http://www.alcpu.com/CoreTemp/
Start both applications for 5 to 10 minutes, then create a screenshot of the core temp window, by simply pressing the F9 key.

Now download this http://www.ozone3d.net/benchmarks/fur/
Run the burn in test for 10 minutes and create a screenshot of the main window, attach the images here.

should i run core damage and core temperature at the same time ?! like should i start it at the exact same time .... ?!

here is the screen shot of the 1st test
btw i got a new GPU like 2 days back

Yes, both at the same time. Those are rather high core temperatures, you should open up the case and check the CPU cooler, it's probably very dirty.

- Remove the heatsink and clean all the dust deposit from both the cooler and the ventilator.
- Clean all traces of thermal grease and apply a new layer. Even if you don't have any grease, it's better not to apply a fresh coating then to have a dried out layer
- Reseat the cooler carefully and fasten it securely

This video covers many of the important steps

No if it was the bios it would not be working for 10 hours then restarting i think the problem is you are working it to hard. Try shutting it down for 30min every 5 hours or using a speed control program to boost your fans

@mkey dint work still havin problem !!
@bommer : right now doin that so it does nt restart xD
and i found out 1 of my ram slots is faulty !!

Repeat the test from post #9.