[SOLVED] PC doesn't boot unless PSU isso switch off and then on

[Hexalon9]

This started happening 2 weeks after I made my PC. I turned it off one night and then following day it didn't boot. Every RGB light lighted up (motherboard, graphics card, cpu cooler and ram) and a warning light on then motherboard lighted up for RAM not detected. The screen showed no signal so I turned it off and switch the PSU off and on and tried again. To my surprise it did the trick, everything turned on and then the screen went to the bios saying that i forced a shutdown and from there i booted Windows 10. But now it's like this everytime I try to turn it on. Can someone please help me out, I am really freaking out over this. Apart from this the only issue I have is that sometimes, like once every 2 hours, my screen freezes along with the sound for about 2-3 seconds and then goes back to normal.

My specs are:
Motherboard - ASUS H370-F Strix Gaming
CPU - Intel i5 8600
CPU Cooler - NZXT M22
RAM - G.SKILL Trident Z RGB 2400MHz CL15 (2x8Gb)
Graphics Card - ASUS Strix GTX1070 OC
SSD - Samsung M.2 970 Evo 250Gb
HDD - Seagate Barracuda 1Tb
PSU - Corsair RM750x
Case - Phanteks P400S Tempered Glass

 

[Dashman9000]

I would definitely reseat the RAM first and see if that helps. If your running an O.C. and the issue comes back I would update to the newest motherboard BIOS if you haven't already and reset to defaults in BIOS.

 

[Hexalon9]

I would definitely reseat the RAM first and see if that helps. If your running an O.C. and the issue comes back I would update to the newest motherboard BIOS if you haven't already and reset to defaults in BIOS.

I have already tried taking the RAM out and putting it back in and it didn't help, everything stayed the same. I am indeed running XMP in order to have the 2400MHz on my RAM, I will try to disable it to see if it helps and I'll say if something happened. Thanks for your answer.

 

[Hexalon9]

As it turns out reverting the XMP profile to the deafult setting in the BIOS made it work properly, but now I end up with 2400MHz RAM running at 2133MHz ...

 

[Dashman9000]

Some RAM / motherboard combinations just don't overclock well....at least you've found out what the issue is. Check the timings on the RAM from G Skill and try to apply those on the next OC