Hey everyone! I'm facing a peculiar problem with my PC that's been happening lately, and I could use some guidance. When I press the power button, it turns on, and all the fans, including the CPU and case fans, are working well. However, my monitor shows no input, and then the system automatically restarts in a never-ending loop.
I've been checking things on my MSI H510M-B Pro motherboard and noticed a few things: the CPU red light blinks for a moment, then the DRAM orange light stays on briefly, and the VGA green light flickers dimly. The cycle repeats back to the CPU light blinking. This issue started without any recent hardware or BIOS changes.
So far, I've tried removing and reseating my single RAM stick in both slots and ensured that my HDMI cable and monitor are fine. Unfortunately, I can't test with another RAM stick since I only have one, and I haven't opened the CPU or motherboard, as they're still under warranty. Any insights into what could be causing this, especially with the DRAM and CPU LED patterns? Thanks in advance for any help!
2 Answers
Have you tried using the integrated graphics? If your CPU has integrated graphics, like Intel's UHD 630, connect your monitor to it to see if you get any display. If you don't have integrated graphics or that doesn't work, try swapping in a different GPU if possible.
Sounds like you might be dealing with a faulty CPU. I had a similar issue with a friend's setup where everything powered on but the CPU LED indicated the problem. If the CPU light is the one that stays on, it’s likely a processor issue. The motherboard is just doing its job by lighting up the others to troubleshoot, but if it's stuck in that cycle with the CPU light, it probably needs a closer look.
I wouldn't jump to a CPU replacement just yet. The DRAM LED staying lit for a second suggests it might be struggling to read the RAM. Maybe check if your RAM is seated correctly or try it in a different slot.
I do have the Intel UHD 630, so I'll give that a shot. Thanks for the tip!