PC won't turn on ?
PC won't turn on ?
i didn't use my pc for a day, and now it won't turn on (the PSU won't turn on). all lights were off in the case except the motherboard standby light. i made no changes to the system and it's been running in my current house/setup for 3 years just fine. here's what i've tried so far:
- assumed it was a bad motherboard, so replaced it but to no avail
- used an old cpu i had to make sure my current cpu didn't die (it didn't)
- paperclip test on PSU powered up all case fans, GPU lights, etc. (also tested voltage on every pin and it's all up to standard)
- tried running the system with one stick of ram, no storage, all possible combinations and no results
- also tried running it with no GPU (i have no integrated graphics so i'm not sure if it would even post)
my only hypothesis left is something's wrong with the PSU despite testing all the pins. could it be a short with the case? my PC case screws have shocked me very lightly before, but i didn't mess with it at all before it stopped working. i also run it floating since it's not grounded because of the adapters (again, it's been like this for 3 years with no changes before it stopped working, but i'm buying a proper power cable anyways).
any other possibilities? is the best way to check for shorts to just run it out of the case? i'll do that tomorrow.
if it helps any, here are the specs
motherboard: asus tuf a520m (originally the asrock b450m steel legend)
cpu: ryzen 5 3600x (also tested with ryzen 3 1200 AF)
gpu: rtx 2070 super
ram: 4x8 @ 3200 mhz ddr4
psu: 650w 80+ bronze cooler master
case: some random chinese case (can find the specific model if it's relevant)
Welcome to the forums, newcomer!
The PSU model is Coolermaster, with a 650W rating and 80+ Bronze efficiency. It's been three years now.
The paperclip test confirmed the fans and GPU lights work, but voltage checks on every pin showed everything meets standards.
The paperclip method isn't perfect—it only confirms the PSU powers on, not its real output under load. For better assurance, consider getting a higher-wattage PSU to see if the problem persists.
The CPU is a Ryzen 5 3600x (also tested with Ryzen 3 1200 AF).
The Ryzen 3 1200 AF isn't compatible with this motherboard unless you're using a B450 chipset board with BIOS version P2.90...?
My PC case screws have been very sensitive before, but I never touched them until they stopped working. I run it in floating mode because of the adapters—still no changes for three years, though I'm planning to buy a proper power cable now.
You should consult a certified electrician to inspect the wiring and grounding issues. This could cause further damage to your PC components.
Hi, sorry for the delay.
The model number of the PSU is MPX-6501-AMAAB, and I've been using it for about five years.
I don't really have anyone who could lend me a PSU or a 3000 series AM4.
I tried the Ryzen 3 1200 on the B450M but forgot to check after flashing the BIOS—it might not support the chip anymore.
I've resolved the grounding issue, so it's no longer a problem.
Both boards are now mounted outside the case to avoid any case shorts, and I tested the 3600x on both. Neither setup worked. It seems more likely one of them is faulty—either the CPU or the PSU.
Any further testing I can do without a borrowed PSU/CPU? I'll try to get my hands on both regardless. Thanks.
This unit is the Cooler Master MasterWatt 650 Semi-fanless Modular 80 Plus Bronze Certified ATX PSU. It features an advanced semi-fanless design, staying silent under less than 15% load and producing no audible noise. As power needs rise, it smoothly adjusts its fan speed, delivering consistent cooling with minimal sound at any output level. The design includes dual forward/...
I won't act on any assumptions you might have; I'm wondering what would be more probable (I thought a forum question would suit computer enthusiasts). Troubleshooting involves finding spare or replacement parts to test ideas. Rather than purchasing parts yourself, consider checking with a nearby repair shop to help identify the problem. If the issue disappears at their work without changing the parts, it might mean the power source has changed.