I'm troubleshooting a Lenovo IdeaPad Gaming 3 (82EY) with a Ryzen 5 4600H, 16 GB DDR4-2133 memory, a 256 GB SK hynix NVMe SSD, integrated AMD graphics, a dedicated NVIDIA GPU, Windows 11 Pro, and UEFI firmware. It randomly freezes, restarts, or displays different blue-screen errors, including IRQL_NOT_LESS_OR_EQUAL (0xA), UNEXPECTED_KERNEL_MODE_TRAP with a DOUBLE FAULT (0x7F), and SYSTEM_THREAD_EXCEPTION_NOT_HANDLED mentioning FLTMGR.SYS. One dump referenced nt!MiLockOwnedProtoPage, while another could not identify a specific third-party driver. It has also frozen at the Windows welcome screen and during restarts.
I have reinstalled Windows and the chipset, graphics, and Wi-Fi drivers, removed and reinstalled the Wi-Fi device, tried Safe Mode, disconnected an external hard drive, checked Reliability Monitor, and analyzed several minidumps. Windows Setup itself also crashed with an unexpected restart error. MemTest86 was running with no errors at the time, but the test had not finished yet. What should I test next if the memory test completes successfully? I'm trying to determine whether the cause is the RAM, SSD, motherboard, BIOS, or a driver.
2 Answers
The combination of changing stop codes, freezes outside normal Windows use, and crashes during the Windows installation points more toward hardware than a normal driver problem. Reset the BIOS to its default settings, then test each memory module separately rather than only testing them together. Also check the NVMe drive or temporarily install a known-good replacement. A Linux live USB can be useful as another way to see whether the machine remains stable outside Windows. Back up important files first, possibly by removing the NVMe drive and using an NVMe USB enclosure.
The minidumps are useful, but when the system also crashes in Setup or freezes before Windows is fully loaded, dump analysis may only show the area that failed rather than the real cause. Finish the full memory test, test modules one at a time, and run a proper health check on the SSD. If possible, use a known-good drive and memory configuration during a clean installation. If that still fails with BIOS defaults and different storage, the motherboard or power circuitry becomes much more suspect.

I tested the memory modules individually and found that one was defective. I replaced the SSD with a 512 GB drive and replaced the RAM with a single 32 GB module. Windows installation is now in progress, so I’m waiting to see whether the system remains stable.