Random freezing and easy CPU debug light appeared on MB after installing M.2.
Random freezing and easy CPU debug light appeared on MB after installing M.2.
Issue: Installed a new M.2 drive for the operating system on my son's PC and experienced frequent freezing or crashes. Previous fixes included using the TOP slot beneath the CPU, checking BIOS recognition, and trying the BOTTOM slot under the GPU. Attempts #4-#5 involved the lower slot below the graphics card. No CPU debug lights appear; it goes straight to BIOS, allowing Windows installation. The problem remains unresolved—random crashes occur without critical system events in the log, except when forced restarts. I usually browse websites or update drivers, but the PC freezes randomly during simple tasks like checking settings or viewing a site. The screen locks up abruptly, displaying colored lines, and each incident differs slightly. What I understand: BIOS is running the latest chipset, Windows updates are complete except for a stuck preview version. I haven’t removed the CPU or stock air cooler since installation. This issue began only after installing the M.2 drive. It wasn’t present with the SSD/HDD combo previously. Could this be related to the CPU or motherboard? Considering the debug LED and CPU controlling the top slot, what steps should I take next to diagnose and resolve it without replacing hardware? I can remove the CPU to inspect pins, but I need to buy thermal paste before returning home for reinstallation. Are there any diagnostic tools or software tests I can use to investigate further? Is this the actual M.2 module? Any suggestions on how to test it? Specs: AMD Ryzen 5 5600X, XFX SWFT309, 6700XT, 12GB MSI MPG, B550 Gaming Plus, 16GB Corsair Vengeance 3000mhz, CX750M, 80 Plus Bronze, WD Black SN770, 1TB M.2 Gen 4x4.
Updated: No debug light has appeared with any of the setups I described. Tested an older M.2 (Gen 3) from last year, replaced on his brother’s system—same problem but worked in the Top slot, which this post focuses on wouldn’t. Windows installation went smoothly, though I experienced random freezes. The drive may be faulty or nearing the end of its life, possibly due to replacement reasons. I also tried a previous SATA SSD (non-M.2) and had similar freezes, so I’ve seen these issues with three different storage options. Should I flash the BIOS between installs? It’s been updated each time, so I haven’t done that. The build date is listed as 3/11/24. I’m unsure what to do next. Should I return or exchange the M.2 and try again? Consider buying a new motherboard and restarting, or check if the CPU was damaged by removing/reinserting it. Could the USB I created with the tool be faulty? I’ve repeated the process 2–3 times, so it’s not certain.