Observation of unusual PC actions: restarts twice prior to post, memory performance unavailable.
Observation of unusual PC actions: restarts twice prior to post, memory performance unavailable.
Hello Friends,
My PC has been behaving oddly lately. It's a 9900k with two 16gb Corsair Vengeance RGB 3200 Mhz RAM units.
Symptoms: When I turn it on, the computer restarts twice and then boots again on the third try. Once it’s running, I can play games and run benchmarks without any trouble. This has been happening for some time; I recall that when it first started, it wouldn’t boot into Windows. Eventually, after lowering the RAM speed from 3200 Mhz to 2800Mhz (which matches the listed spec), it still runs at 3000Mhz with adjusted timings.
Around that period, I also noticed RAM 55 errors, but managed to get the system up again after some adjustments.
If I take out the RAM, the PC still reboots when I power it on.
I’m also puzzled because the BIOS no longer has an XMP profile for 3200Mhz, even when resetting to defaults.
I’ve tried troubleshooting: tested each RAM stick separately, in different slots, with all possible combinations. No solution found.
Removed RAM, GPU, and CPU (replaced them). Still no improvement.
Loosened the CPU cooler screws. Nothing worked.
Possible conclusions:
- It seems the RAM might be fine.
- The CPU could be deteriorating, especially the memory controller.
- The motherboard may have a problem; it’s a Z370 model from 2017.
- There might be an issue with the power supply unit (PSU).
What do you think?
Check Reliability History and Event Viewer.
Both tools might record error codes, warnings, or info about ongoing reboots/restarts.
I believe an update or installation attempt could be happening.
If it keeps failing a few times, Windows may just proceed.
Also, examine Task Manager > Startup and Task Scheduler for any unusual or unknown applications.
Investigate as needed to pinpoint the cause.