PC seems to boot but will not display

TullaWho

Commendable
Aug 21, 2016
2
0
1,510
I've been a mac user most of my life, but built a PC with help late last year. Mostly has been a pretty great experience, but suddenly I have lost the ability to output anything to any display. Unfortunately, I do not have easy access to the resources I used for help in the build anymore after moving, so I'd love some advice.

First, an overview of my rig:

MSI Z170i Gaming Pro AC Mitx Motherboard
i7-6700k at 4.0Ghz, with OEM fan
2 x8GB DDR4-2400 Corsair Vengeance
128GB SSD
1TB HDD
EVGA GTX 980 TI 6GB
450W Power Supply

Now the problem and my troubleshooting so far:

I was using the system a few days ago when it seemed to hang up, not taking any sort of mouse or keyboard input. I left it for a moment, hoping it would clear up, but assumed that a game in beta I was playing had just caused some sort of crash and when I returned to the room held down the power button for a few seconds until the system shut down.

When I returned to restart it a few hours later, the machine never got past the "MSI" splash screen for the motherboard on boot up.I shut it down, then left it for a day.

My next attempt at troubleshooting was to try to use different combinations of I/O ports. HDMI vs Display port, different USB devices, etc. I had read a thread on here that similar issues sometimes resolve after such simple fixes. I no longer even got the "MSI" screen after these attempts, and no version of reversing them could restore even the splash screen.

Now I thought it was time to open up the case and start checking out the components. Generally everything looks and sounds normal on startup. specifically, inside the case I noticed that on startup the LED on the motherboard for cpu flashes briefly, the RAM LED flashes a bit longer, but the problem seems to start when the VGA light never lights. I removed the RAM from my system, and the RAM LED then stayed lit until I turned it off, just to prove to myself that it was actually passing that test. I tried disconnecting both the power and data from my 980TI, trying to see if I could get results from the integrated graphics or something if that were disconnected. No change. I also tried disconnecting the data drive, my 1TB HDD in case it was somehow very corrupted. And even the SSD with my OS. I unplugged the connector to the front mounted USB ports. Just trying to see if I could find where it was failing. But nothing produced any change. The system seems to start up well, cpu LED flashes, fans come on, RAM LED flashes. GPU fans and lights are on, Case LEDs are on, etc. but I cannot get anything to display either from the 980TI or the integrated graphics on any monitor.

Any advice? I was thinking I need to take it to some sort of shop since I'm about at the end of my knowledge, and don't have another rig to test anything on, but I'd prefer not to pay someone to do something I could do myself if there's something I've missed, and I'd love to come in with a specific request.
 
Try clearing the CMOS (unplug the power cord and remove the CMOS battery for a minute). Leave only CPU, CPU fan and single RAM module connected to the motherboard (no graphics card, or storage drives). Connect a monitor to the board via HDMI (test also different HDMI cable, if available). Start the pc and see if still no signal.
 


Thank you for the reply! I tried to reset the CMOS but as far as I can tell from the manual for the motherboard the only instruction for how to do so is to short out or place a jumper cap on a set of pins related to the battery while the system is unplugged. I do not have a jumper cap and tried other methods to short it, but cannot be certain they succeeded. Either way, the result is still no display signal, even with multiple different HDMI and DisplayPort cables and with only one ram module, no video card and no storage device. I believe it may be time to take it for more experienced help as much as that pains me to say.