Question PC won't boot every time since changing the motherboard ?

[majmalnaric]

Hello all,

Specs
MBD: ASRock Z370 Pro4
CPU: i5-9600k
RAM: 32GB Corsair Vengeance 3600Mhz (Running only on 2666Mhz because of the CPU)
GPU: GTX 1060 6GB
SSD1: HP EX950 M.2 512GB
SSD2: SanDisk PLUS 1000GB

I don't usually post often since there is plenty of solved issues to look up but I can't seem to find anything that worked so far.

Yesterday I switched the motherboard so I can put the i5 9th gen inside of it. Rest stayed the same.

Old motherboard: Z270 Pro
New motherboard: ASRock Z370 Pro4

The PC didn't want to boot the first time, but I discovered that the M.2 wasn't set as priority boot. So after that it boots but after that the next restart it just keeps looping until it resets BIOS settings and then boots. But the issue repeats itself after shutting down the PC and starting it. Have tried to switch RAM slots next to other possible issues but nothing seems to resolve this issue. How I get it to boot is taking out CMOS and putting it back in and after 2-3 restarts it boots. But the issue stays.

P.S. When it boots everything works fine (benchmarks, tests, etc.)

Pretty confused on what to do here guys. Any help is much appreciated!

Thanks in Advance

 

[helpstar]

update the BIOS of your motherboard
eventually replace the cmos battery (plus sign visible)

freshly install windows

 

[USAFRet]

New motherboard generally requires a fresh OS install.

As 'problems' have already presented, that is now required.

 

[majmalnaric]

Okay thank you! So to sum up from yesterday since I installed Windows again, PC booted instantly being 10x faster. I installed drivers etc. for the things needed and restarted / shut down the PC to check if my issue is gone. Boot time went from 52 seconds (xD) to 8 seconds. BUT now it was not on for 1 day and it does not restart anymore as often as it did but just stays on without posting or anything appearing on the screen. Finally got it to boot after clearing CMOS + enabling Windows boot manager so I can select the M.2 and it boots fine.

The issue comes when the PC is off for a longer period. I can restart it 100x now it will boot 100/100. I don t know what to do anymore. Would this maybe indicate something being defect on the motherboard? Because I ran two tests for RAM, reinstalled windows, selected the right drive boot order... + sometimes it boots with RAM being @2133Mhz and sometimes @2667Mhz. With XMP (3600Mh) just keeps restarting and I have to clear CMOS. Anything else I can try to do?
- Also installed new battery
-Latest BIOS

 

[majmalnaric]

P.S. Right now I put it in sleep mode and it started restarting over and over and doesn’t boot.

 

[helpstar]

which bios version is on it?
check for bent or discolored pins in the motherboard CPU socket
check with a different PSU