My Windows 11 PC has become extremely unstable. Games and web browsers crash, applications sometimes refuse to open, and the entire computer frequently blue-screens. The errors I have seen include MEMORY_MANAGEMENT (0x1A), KERNEL_MODE_HEAP_CORRUPTION, KERNEL_SECURITY_CHECK_FAILURE (0x139), SYSTEM_SERVICE_EXCEPTION, PAGE_FAULT_IN_NONPAGED_AREA, CRITICAL_PROCESS_DIED, and occasionally WATCHDOG_VIOLATION. MEMORY_MANAGEMENT is the most common.
My system has a Ryzen 7 5800X3D and an RTX 5070. CPU and GPU temperatures look normal. So far I have replaced my roughly 10-year-old power supply, removed and reinstalled graphics drivers and Windows updates, tested different RAM, updated the BIOS, forced PCIe Gen 4, and disabled DOCP. I have also tried resetting or reinstalling Windows, but the system crashes during the process too. What should I test next, and is the likely cause the RAM, motherboard, CPU, GPU, storage, or something else?
3 Answers
The first things I’d check are the storage drives and memory. Use CrystalDiskInfo to check the health of every drive, including any secondary hard drive. Then test each RAM stick individually in different motherboard slots. A bad stick, slot, memory controller, or unstable voltage can produce memory-management errors even when normal temperatures look fine. Keep DOCP and any automatic overclocking disabled while testing.
Run controlled tests instead of changing several things at once. Windows Memory Diagnostic is a starting point, though a failed result does not always prove the RAM itself is bad. OCCT can test system memory and VRAM separately, while AIDA64 and FurMark can stress the CPU, GPU, and power delivery. Also run DISM and SFC from an administrator Command Prompt to repair possible system-file corruption. Reseat the GPU, remove unnecessary USB devices or riser cables, and test with one RAM module at a time. Record which test causes the crash so you can narrow down the failing component.
Since the crashes happen even while resetting or reinstalling Windows, this may not be an operating-system problem. Back up anything important, load BIOS defaults, and try a completely clean Windows installation with only the basic drivers and software. If the installer itself crashes, focus on hardware—especially RAM, the motherboard, storage, or the CPU’s memory controller. Don’t install motherboard or CPU utilities that enable automatic overclocking until the system is stable.
I’ve attempted Windows resets several times, but the computer crashes during them. I’ll try a clean installation with default BIOS settings and minimal software.
I’ve already tried one stick at a time, both sticks, and another RAM kit that works in a different system. I’ll keep testing the sticks and slots, but Windows also crashes or shows an error during resets and reinstalls.