Question PC does not boot most of the time.

[micco10]

So this problem started a couple of weeks ago, my PC only boots SOMETIMES, when i turn it on, all fans spin, everything running but no display whatsoever, monitor light stays orange. I say sometimes because out of 15-20 tries sometimes it does boot and it remains on for as long as i want it to with no problems, but if i do have to restart or turn it off, the problem comes back.

A few things to note: i tested monitor, psu, gpu, ram and ssd/hdd in different pc, these work fine.
Also, motherboard and cpu are about 7 years old if that makes any difference.

Is it normal for a cpu or mobo to fail to boot like this but when it does boot it works perfectly?
Am i looking at a dead cpu or mobo? If so, how to identify which one?

Specs:
AMD FX 6300 3.5 GHZ
MSI 970A-G43
CM Hyper 212 EVO
2x 4 GB Corsair Vengeance 1600 MHz
GTX 750 ti
SSD Samsung EVO 950 250GB
EVGA 500B

 

[Governor K]

So your PC is booting, but your display is not responding? The display port may not be in the best shape anymore. My guess: maybe you should look at a new MOBO.

 

[micco10]

So your PC is booting, but your display is not responding? The display port may not be in the best shape anymore. My guess: maybe you should look at a new MOBO.

Not exactly, i'll describe it again: i push the power on button, everything lights up but no display on monitor, I need to do this several times and hope to get lucky for it to POST, after it eventually does, it works fine until shutdown.

I don't think it has to do with the display port, because i'm using the gpu's port and i tested the gpu in a different pc.

 

[Mtop]

You will not see anything on your monitor until system posts!
Does it beep at all when it fails to post?
Could be a power supply, MB or processor.
Make sure all your MB power connections are good, Remove plug looking for overheating, then re-seat.
Sounds like you have access to a power supply to test.

 

[micco10]

You will not see anything on your monitor until system posts!
Does it beep at all when it fails to post?
Could be a power supply, MB or processor.
Make sure all your MB power connections are good, Remove plug looking for overheating, then re-seat.
Sounds like you have access to a power supply to test.

It does not beep at all.
I think all MB connections are fine because like i said, sometimes it does posts and functions normally.
I only have 1 power supply, but i did test it in a friends pc and it works perfectly.