PC powers on but only occasionally boots/posts

[spyguy001]

So i built the rig around 3.5 years ago, and its worked fine for most of the time, but around a year ago i started having this problem where while starting, the PC would power on and post right up until it had to go into windows and then basically freeze, until i restarted and it worked correctly.

Recently, that's changed and now it powers on but won't boot at all. I haven't changed any components recently or done anything with the drivers either. The "problem" is mostly the same every time too. By that i mean the fans/CPU/GPU/RAM everything seems to be working, but the monitors don't detect an input and it doesn't boot up. Occasionally, for no discernible reason, it does post and i can use it perfectly well but the moment it shuts down its back to the problem. I've been avoiding shutting it down and have been putting it to sleep to keep it working but sometimes there's just no avoiding a shut down.

I did the memOK test a couple times, switched around the RAM, cleaned it up, etc. but still nothing.
I have quite a few pictures of what all the components are like when its working fine and a gif of what's it when its not working. The red light is the memOK light and the green i assume is the mobo/gpu.

My goal right now is to find which component is malfuncting, if there is one, and to gather various solutions to troubleshoot and maybe even fix this. I don't have any replacements for any of the components and i can't buy any before determining for sure if they're the problem.

Please halp...

 

[hang-the-9]

You need to list full system specs, including power supply brand and model. Without being able to test components you will not be able to find out what the issue is. If system shuts down randomly it may be a bad power supply, motherboard, RAM, CPU, hard drive issue, cable issue, almost anything. The only way to start ruling out causes is to replace components with known working ones or test them in another system.

 

[spyguy001]

I guess i was a bit too subtle in putting the hyperlinks, oops.
Here's the system: https://ca.pcpartpicker.com/b/CpwPxr

 

[hang-the-9]

Remove the secondary drive, use only the main boot drive, see if that works. The TX model from Corsair is one of their lower end models, that may be an issue. But without testing another PSU, another video card, trying your parts in other systems to see if they are OK there, there is no way to really rule out the issue.

 

[spyguy001]

Turned out to be a faulty/corrupted bios.