Sudden PSU failure? No recent component switches/upgrades

nottheonlydreamer

Honorable
Jan 12, 2014
2
0
10,510
The power supply I've been working with is the ZM360B-APS, a 360W PSU by Zalman, which, on their website is stated to support the 64-bit Dual Core Intel Pentium D and the AMD Athlon X2 CPU's.

The original computer had an Athlon X2 in it, a low-level desktop computer. However, about a year ago I decided to upgrade my computer with several new components, such as the Intel i5-3570K Quad Core processor, the Intel DH61BE Desktop board, an older Gigabyte 250GTS graphics card and 8 gigs of cheap memory.

My budget was limited but I felt the change was needed and I think I did an okay job choosing the components. The original PSU, HDD and DVD player remained in the computer.

Recently (about 2 weeks ago) the computer started to crash? from time to time. I would be working on the computer and it would suddenly turn off. No shutdown process, just plain turn off and ready to turn on again.

I thought nothing of it, really. There were no BSODs so I thought it had perhaps been a power outage in my area, or maybe a faulty power outlet.

Then it started to become more often, every two to three hours the computer would just turn off.
Sometimes it would turn off and when I'd turn it back on, the computer turned off again during boot.

I removed some of the components like an additional Soundblaster PCI card and the GTS 250, to no avail. The crashing kept occuring.

I switched HDDs, no luck.

I decided to unbolt all the components and reseat everything. The memory, the processor, the cooler, all the cables (including the power cables), everything.

To my surprise, it worked. Sort of. The computer did crash 1 time, but only after an hour. Remarkable. It then continued working for another 4 hours without crashing a single time.
I figured it was just a connection issue or something like that.

I decided to place all the components back into the computer case and continue with my crashfree computer. It didn't work. Yesterday, after I had placed all the components back into the computer case, it worked fine. It didn't crash anymore. I played games, did some photo editing and other day-to-day computer tasks without a single crash.

I wake up today and realise my computer is crashing again. I've since reseated the memory another time, did a memory diagnostics check etc. But that didn't work out since the computer crashed during the memory test. It crashed on boot, it crashes within the BIOS configuration screen, it crashes during boot, it crashes just after the POST.

I'm going to grab another PSU from a different computer that I know works fine and hook it up to this one to see if the crashing is fixed. Any other suggestions? :(