I'm struggling to pinpoint the component causing my PC to fail to POST. Here's a bit of background on my setup: I have an ASUS GeForce GTX 1650 GPU, and I recently swapped out my AMD Ryzen 5 3600 CPU for a new Ryzen 7 5700X. Also, I replaced my old Gigabyte B450M H motherboard with a new MSI B550M PRO-VDH. The original issue was that my PC suddenly stopped displaying anything; my monitor shows no sign of connection, nor can I access the BIOS.
After suspecting that the motherboard might be at fault, I bought a new one, but the issue persisted, and the CPU LED on the EZ Debug indicator remains lit. I've tried all sorts of troubleshooting, such as reseating cables, checking the CPU for bent pins, and clearing the CMOS, but no luck. I've tested both the old and new motherboards with both CPUs and noticed that the only change in behavior is with the new motherboard and CPU combo, which at least allows me to force a shutdown.
What steps should I take next to diagnose or solve this issue? Any insights would be really appreciated!
2 Answers
I remember facing a similar issue where everything powered on, but it wouldn't POST. Have you tried stripping down the system to the essentials? Disconnect all peripherals and components like additional storage drives, leaving only the CPU, GPU, and one stick of RAM to see if it boots. Sometimes, too many components can cause conflicts that you'll need to isolate. Also, check if there are any BIOS updates available for your new motherboard; that can sometimes resolve issues like yours as well.
Sounds like you're dealing with a tricky situation! From what you've described, it could very well be a power supply issue. Have you checked if your PSU is supplying enough power? It's a common culprit when systems won't POST. Make sure all the fans are running properly, and if everything powers on without issue, that’s a start. I had a similar experience where my setup would randomize between posting and not posting, and my troubles eventually linked back to my PSU. You might want to try swapping it out with another one to rule it out for sure!
I agree, a faulty PSU can cause a no POST scenario. If you're confident all your connections are solid, and nothing seems off with the components, definitely test another PSU. If nothing changes, then we might need to consider other pieces like the GPU or RAM next.
That's a solid approach! I also suggest making sure that your RAM is seated correctly and trying a different RAM slot, or even a different stick if you have spares. It's a simple step, but can often fix POST issues.