A Desktop PC built from off-the-shelf DIY parts, rather than a prebuilt from a major manufacturer. These can also be built by a system integrator using off-the-shelf parts.
my pc gets memory management error out of nowhere and reboots several times when i open many apps or gets booted bhen playing games or doing any of the work
Test with diffrent good known ram & re-run ram check (if bad > )
clean slot or cpu pins
If it works with new ram , clean the old ram golden pins with eraser &/or contact cleaner + a brush
Re-test.
Update bios , set manually ram timings & voltage to ram maker specs ,
Check motherboard compatibility with problematic ram on mb maker home-page. (if it's not in the QVL list it may not work properly so test your ram on diffrent system.)