I built a new gaming PC about a month ago, and I've started getting random BSODs with different stop codes, most frequently "IRQL_NOT_LESS_OR_EQUAL" and "SYSTEM_SERVICE_EXCEPTION." The crashes happen during gaming and sometimes even at idle. I've run Windows Memory Diagnostic, which found no errors, and updated all my drivers from the manufacturer's websites. My next step is to check the minidump files, but I'm not sure how to interpret them. For those experienced with BSOD troubleshooting, what's the most logical process of elimination? Should I focus on testing the RAM with MemTest86 overnight, stress-testing the CPU and GPU individually, or could this point to a failing SSD or even a motherboard issue?
Two quick things to frame your approach: get those minidumps parsed first (even a quick read with BlueScreenView or WhoCrashed). Note the stop code, the module it points to, and what you were doing at the time (gaming vs idle). That will guide the next steps instead of random testing.
Memory is a very common culprit here. Do a proper MemTest86 run: create a bootable USB, run overnight (8–12 passes or more). Test one RAM module at a time in each slot to identify a bad module or a bad DIMM slot, and if you have XMP/RAM overclocks, consider pulling back to a safe profile until you’re stable.
Next, check the storage interference angle: run SMART checks on your SSD/HDD (CrystalDiskInfo or your drive’s tool). Look for reallocated sectors, pending sectors, or read/write errors. If you see signs of drive trouble, clone important data and consider replacing the drive or running a manufacturer diagnostic to confirm failure.
Performance/stability tests can help isolate the GPU/CPU/power path. Do a controlled stress test: Prime95 or AIDA64 small FFTs for CPU, and FurMark or a GPU bench for the video card. Monitor temps and voltages; if crashes only happen under GPU load, suspect the GPU or PSU rather than RAM. Remember to keep fans sane and temperatures in check.
Don’t forget the basics: update BIOS to the latest version, reseat the GPU and RAM, and run with all nonessential devices unplugged. If you’ve overclocked anything, revert to stock to see if stability returns. A clean boot with minimal drivers can also reveal a software conflict.
Documentation plan: keep a simple crash log (time, what you were doing, which game or app, temps, voltages, system changes). If you can isolate a suspect component, swap it out one at a time and retest. If you want, tell me your motherboard, CPU, GPU, RAM, PSU, and any overclocks—I can suggest a targeted testing sequence.