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

 

[majmalnaric]

Hardly boots at all now. Have to clear CMOS again...