No display, CPU and GPU fans don't spin. Very old PC

[phillpower2]

You 100% need to try an alternative PSU.

The MB looks to be dead but there is an outside chance that the +12V rail on the PSU is bad, this is the rail that provides the power to the hardware that has the biggest power draw, the CPU, GPU and the mainboard.

Fwiw, because the beep pattern changes when you move the RAM around there is hope for the MB.

[Paulik]

If this doesn’t help, I will have to buy a new PC, so I will buy a new PSU anyway because I don’t think replacing the MB in such an old PC makes sense. Should I look at something specific to buy a PSU that is compatible with this rig, or can I buy any PSU with a minimum B/C tier in the PSU tier list?

[phillpower2]

Buying a new PSU appropriate for this build would be a waste of cash if it turns out that the GPU or MB have failed, reason being that what you need for this build is nowhere near the quality and cost of a modern gaming rig, you will get away with a decent Bronze efficiency rated EVGA PSU whereas a new gaming rig needs a minimum of a Gold efficiency rated PSU from a proven brand.

Best I can suggest, ask a local tech what they will charge for testing your rig with an appropriate PSU, see if you can borrow something like a 500W Bronze efficiency rated PSU or purchase a used one of the same spec off something like ebay, just make sure that you get a 100% assurance off the seller that the PSU is in full working order, brands to look out for Corsair, EVGA or Seasonic, if nothing changes you at least have a PSU that you can keep for any future testing that you may need to do.

[phillpower2]

Paulik,

You revisited the forum but left no reply, do you still need help or should we assume that you no longer require assistance.

[Paulik]

You can close this thread, I will buy a new, cheap PC. Thank you for your assistance.

[phillpower2]

You are welcome and thanks for the follow up (y)