Completely black screen after booting, no BIOS, no OS shown

jss367

Commendable
Apr 15, 2016
7
0
1,510
I am having a problem booting my computer and I think it's associated with my Asus Z-87 PLUS, but I'm not sure. When I try to boot it up the fans turn on and everything looks normal in the computer (although the fans never quiet down like normal) but the monitor doesn't display anything. Sometimes I am able to get past this, mainly after turning it off and on a bunch and fiddling with everything, but it's really inconsistent. When it finally does start working, I get the American Megatrends page and it says "SIO Power OK delay fail, Please reconfigure your setting. Press F1 to Run SETUP". After I press F1 and get out of BIOS everything works fine. I googled that error but wasn't able to find anything that fixed my problem.

I built this computer about 4 years ago and it has worked really well. Then for no reason I can think of this started happening a few weeks ago (maybe a static electricity shock, but I didn't install anything new or change the BIOS). Today I can't even get to the BIOS screen after an hour of fiddling and restarts. There are no error LEDs lit up on my motherboard.

Here is my build:

Core i5-4670K 3.4GHz Quad-Core Processor

Asus - Z87-Plus ATX LGA1150 Motherboard

Corsair - Vengeance 8GB (2 x 4GB) DDR3-1600 Memory

Corsair - Vengeance 8GB (2 x 4GB) DDR3-1600 Memory

Samsung - 850 EVO-Series 500GB 2.5" Solid State Drive

Western Digital - Blue 4TB 3.5" 5400RPM Internal Hard Drive

Asus - GeForce GTX 960 4GB Video Card

NZXT - Phantom 410 (Black/Orange) ATX Mid Tower Case

Corsair - CX 430W 80+ Bronze Certified Semi-Modular ATX Power Supply

Microsoft - Windows 7 Home Premium SP1 OEM 64-bit

Dell - U2412M 24.0" 1920x1200 60Hz Monitor

Dell - U2412M 24.0" 1920x1200 60Hz Monitor

I removed the GPU and went DVI straight to a single monitor had the same problem (nothing on screen but after many attempts got it working). I also went down to a single stick of RAM but same thing (I put the others but in since then). I'm thinking that static electricity from me moving it on the carpet is the culprit. Unfortunately, I don't have a spare motherboard, power supply, or CPU to test it out to see if that's the problem.

How can I go about diagnosing this? What should I try next? I'd like to narrow it down to a single piece of equipment so I don't buy stuff unnecessarily.
 

jss367

Commendable
Apr 15, 2016
7
0
1,510
I got a speaker and connected it and there weren't any beeps. I tried pulling out RAM and just using one stick or the other in various slots and still got nothing. Sometimes the DRAM LED lit up, but usually not.