Problem with my pc

bizzare6543 · 9 Mar 2009 at 00:30

My PC was fine on Friday morning, turned it off and came back later and tried to turn it on. It wouldn't POST the first time, but was fine the second, but I noticed my BRAND new HDD was clicking tried it in a different PC, which I know works, so I'm going to need to RMA that.

Took the HDD out, but I was still getting the same problem with random POSTing but obviously without the HDD clicking. Since then I've tried a few things, 1 stick of RAM, the other stick of RAM, a different motherboard and a different PSU. The only thing is I'm not entirely sure if the other motherboard I tried even works, but with that motherboard wouldn't even POST.

Only thing that's stayed constant which I've been unable to test is the CPU, does it sound like the CPU has finally given up? Or could it be my motherboard or something else.

Any ideas on which is more likely, or if you think it may be another component.

Thanks for any help you can give me.

VaderDSL · 9 Mar 2009 at 00:32

Have you dropped everything to stock?

sk3lph · 9 Mar 2009 at 01:11

The first thing I think you need to do is reread your original post and try and make it clearer as I'm struggling to make sense of some of it.

I think you are saying that you are getting a blank screen and no beep codes when you switch on and you have already confirmed in another PC that the hard drive is definitely not working.

I recently had a blank screen problem and it turned out to be the PSU that was faulty.

As you said, the best way of isolating the problem is start with just the PSU connected to the mobo with RAM and video card plugged in and see if you can get to the bios screen. Ideally keep swapping bits if you can, until you're successful, which can obviously be tricky if you haven't got the spare bits to hand.

Also, make sure you have a speaker plugged into the mobo in case you are getting a beep code but can't hear it.

HTH.

bizzare6543 · 9 Mar 2009 at 19:29

OK I'll try to word it more clearly.

The actual problem is that my PC suddenly only POSTSs occasionally. When it does POST I can get to the BIOS and everything is fine, but when it doesn't, all the fans power up and I don't even get any beeps, and the speaker is plugged up. I've tried everything you've suggested but unfortunately I can't try a different CPU, but I can try a different GPU if it's worth trying?

superflyguy · 9 Mar 2009 at 19:42

If swapping gpu's doesnt work, then strip down to bare bones.
Add components one by one, also try memtest burn in to check memory is ok.
Process of elemination should bring you to the cause of the issue.