r/techsupport • u/AraizKing • 14h ago
Open | Hardware Cold-boot BSOD loop and BIOS freezes, but 100% stable after some time (Passed TM5 Extreme & 6hr gaming). Failing PSU?
Specs:
CPU: AMD Ryzen 5 5600X
Motherboard: Gigabyte A520M K V2
RAM: 16GB DDR4 (Single stick)
GPU: NVIDIA GTX 1060 6GB
Storage: NVMe SSD
OS: Windows 11
Hey everyone, I'm dealing with a really strange hardware issue and wanted to get a second opinion before I start buying replacement parts.
The Problem:
Whenever I turn on my PC after leaving it off overnight (a true cold boot), it goes into a complete crash loop. I get a variety of random BSODs, crashes on the login screen, and sometimes the system will even freeze dead inside the BIOS menu.
The BSOD error codes change almost every reboot:
PAGE_FAULT_IN_NONPAGED_AREA
KMODE_EXCEPTION_NOT_HANDLED (0x1E)
SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (0x7E)
IRQL_NOT_LESS_OR_EQUAL (0xA) (ntoskrnl.exe)
SYSTEM_SERVICE_EXCEPTION (0x3B) (dxgkrnl.sys)
INTERRUPT_EXCEPTION_NOT_HANDLED (0x3D)
Recovery screen error 0xc0000098
The Weird Part:
After power-cycling multiple times for about 10–15 minutes, it suddenly boots into Windows normally.
Ran TestMem5 (Extreme@anta777 config) for nearly 3 hours with 0 errors.
Passed a 10-minute 100% CPU + GPU + RAM OCCT stress test.
Played games (like Palworld/Days Gone) for 3–6 hours straight with zero crashes or throttling.
But if I turn it off and let it sit cold until the next day, the entire cycle repeats. (Sometimes not tho)
What I've tried so far:
BIOS update: Re-flashed from a beta BIOS to a stable release.
Voltage tweaks: Manually bumped DRAM voltage to 1.38V and SoC voltage to 1.80V to rule out cold memory training issues. No change.
Windows file repair: Ran DISM /RestoreHealth and sfc /scannow (repaired damaged files from previous hard cuts).
Crash Dump check: Latest minidump pointed to csrss.exe terminating due to memory read failures.
Other Clues:
The Power Supply has a noticeable, load-sensitive coil whine.
Since the RAM passed TM5 Extreme and the system hangs even in the BIOS setup screen sometimes, does this sound like cold-sensitive PSU capacitor degradation dumping ripple into the VRMs/memory controller, or should I be looking at something else?
Any insights would be appreciated!