Possible PSU issues, how to tell.

Hi there,
As per a previous post, my computer died and I ended up installing a new MB, CPU and 32 GB Ram.
New motherboard - RAM

Anyway, now my computer is having startup and running issues.

By this I mean that my pc might run fine for hours and then suddenly shutdown and the cooling fan go ballistic,
OR it may just shutdown,
OR it might not start at all but give a few pathetic beeps and spin the fan a bit then go quiet and then repeat, OR upon hitting the power button the cooling fan might go Billy bananas and nothing else, just the crazy fan, OR it might run perfectly.

So, could this be a psu issue? My problem is I lack testing equipment or spare psu to check it out and as i live in Cairo/Egypt, I will be forced to bite the bullet and buy a new psu without really knowing if there is something wrong with my current psu.

Any hints/tips/ideas i should try first?

Cheers
B

Do you think it's possible that your new motherboard might be defective? Did you have a similar problem when you had the old motherboard?

Normally, I'd suspect the PSU. But they are hard to test meaningfully and you have no known good spare to swap in. So the new motherboard can't be ruled out.

I don't think there is much you can do as a test unless you have sophisticated testing equipment. You can test PSUs to see if they will turn on and are not outright DOA, but that doesn't help you with an intermittent problem.

It's a tough call. I'd probably assume it is a PSU issue and buy a replacement. If that didn't fix it, then the motherboard becomes suspect.

I assume you've reseated all cables.

Have you run memtest86+ on the RAM?

Have you been monitoring CPU and motherboard temperatures and fan speeds with an application designed for that purpose?

What PSU brands and models do you have available at local dealers? There are a small handful (4 or 5) brands that are likely to be good to high quality, but the rest can be average to horrible.

Thank you for your reply ignatzarsonic.

If/when i do purchase a new PSU, what are the brands I should stick to?
Also how do i tell what power rating i should purchase? Stick to the same power rating as the current one, 850W?

You don't need anywhere near an 850 watt PSU. Did someone tell you that you needed that much power? Did you have any choice when you bought the PC?

Some Corsairs are OK, some are average.

Look for a 500 to 550 watt standard ATX PSU from any of these brands:

Seasonic, XFX, EVGA, Super Flower, Corsair, or Antec.

Make a list of those you see and report back with prices and I'll try to give you specific advice.