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No display/no bios - sometimes boots up fine, mostly not

zoneater

Commendable
Jul 26, 2016
2
0
1,510
First time poster - patience is appreciated.

About two weeks ago, my rig began to stop booting reliably. Pressing the power would result in the computer spinning up - case lights activating, normal boot sounds overall - but then would stop. Black screen, no output.

Gradually this has become worse. If I cycle the power twenty times it may boot up just fine once. Suspecting the power supply, I upgraded, but to no avail - the issue still manifests. But when it does boot, the computer behaves normally. Diagnostics indicate no problems and the memory is detected in full. I was able to play my games normally with no graphics issues, lag, freezing - once booted, it seems fine.

My system has been perfectly fine for over two years now - aside from he new power supply, I haven't added or removed anything. The problem has worsened to the point where I have to cycle the power over and over with my fingers crossed. No change or odd beeps to indicate a clear issue.

I've done the normal breakdown and rebuild - testing my memory stick by stick and unplugging everything but the essentials to the same result. I reset the CMOS via the pins with no apparent affect.

I'm using:
ASUS M5a97 r2.0
AMD FX-8350 8 core
16 gigs ripjaw ddr3 mem
Nvidia gtx 970

Newest component is the graphics card, which is maybe a year old.

Most confusing is the random successful boots amidst the dead space.

Any help is greatly appreciated,




 
One minor update: woke up and fired it up and it booted, acknowledged the CMOS update and let me save the new info, but then reset... And back to square one. Nothing happening on-screen.

The bios seems fine - and it acknowledges the CPUs cores and parameters.

I'm stumped.