Intermittent Boot Up Failure

[Vertinari]

My PC has been encountering the following intermittent issue for a couple of years now.

 

When the PC is turned on, the keyboard will light up, go out, then light up again, the monitor does not turn on at all (motherboard loading screen doesn't show up). There is no sound made other than the PC fans spinning up.

 

Typically the way I solve this is by turning off the PC, unplugging the power and waiting a few minutes. If that doesn't work, I'd just keep repeating it a few more times and it eventually turns on.

 

This used to be a minor inconvenience every once in a while, but it's been happening increasingly often and requires many more attempts to recover.

Is there a way to identify the root cause of the problem and permanently fix this issue?

 

Hardware:

Motherboard: ROG STRIX Z390-H GAMING

CPU: Processor Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz, 3600 Mhz, 8 Core(s), 8 Logical Processor(s)

GPU: NVIDIA GeForce RTX 2070 SUPER

RAM: Corsair Vengence RGB Pro 16GB (2 x 8GB) DDR4 DRAM 3200MHz

[dj_ripcord]

If this is happening increasingly often, lets hope you can reproduce the issue. The only trouble is, it might take a little while to find the culprit. It can be any device connected to your PC causing this issue. My first concern would be RAM. To troubleshoot, remove one stick of RAM and test. See if it continues to happen or not. If not, then that's your culprit.
After RAM, test your GPU. Pull it out completely and test again.
Still happening? Remove one hard drive and test again.
From there, test your USB peripherals.
And if none of that solves your issue, its likely your motherboard. I haven't heard of this issue occurring due to a CPU before, so that's pretty unlikely. Unless of course you have an overclock on that 9700K. In which case, the first thing you actually needed to do was revert any OC parameters back t default before doing any of the testing above.

[Vertinari]

Thanks so much for the suggestions, I'll definitely take a look to see if I overclocked it, although I doubt I did.

 

The trouble with the problem I'm facing is that it is intermittent and sometimes just powering it off and on again "fixes" it. I've done a full removal and reinsertion of the components previously, but that didn't resolve the problem. Sometimes months would go by without any issue, then bam... it comes back suddenly for a few weeks. As I unfortunately do not have spare GPU and RAM to swap in for an extended test, it'll be a bit tough to try it out, so will prob try it as a last resort.