Monitor not receiving signal, case leds not turning on

CrackyBones

Commendable
Jan 31, 2017
11
0
1,510
I've got kind of a strange problem. My pc will boot, I can hear all the fans and whatnot turning on, the lights on my motherboard and gpu turn on, but the monitor doesn't turn on (and when turned on doesn't receive a signal) and the case lights, on button and hard drive activity light don't turn on. Seem completely unrelated to me. My computer crashed a few times before this all happened. Funny enough, I had been playing a very gpu intensive game for a few hours, then I stopped to play a much less intensive one (spore to be exact) and a few minutes in my computer crashed. Turned it back on, launched spore again, and then it crashed again. Then things get weird. I turned it on, then it turned itself on, then off, then on again, over and over. Eventually I had to unplug it. After letting it sit for a while and turning it back on, it seemed to boot fine, but the monitor didn't turn on nor did the lights. For a bit more info, it was the first time I launched spore, and I have a pretty decent pc - 8gb GTX 1070, 16GB RAM, i5 7600. I could provide more specs but I'm not sure how they're relevant. One more thing - someone who helped my build the computer said the protective coating on the mobo was damaged, so something bad might happen at any moment. My pc was running flawlessly until this all happened, btw. Could this be a motherboard issue? Sorry for the information overload, I just don't know what is relevant to the problem. Thanks in advance.
 
Solution
looking at two parts that may have failed. one is the gpu. the easy test pull the gpu see if onboard video posts and the gpu see if it works in another pc. the other issue can be power supply failure. try using onboard gpu and a test power supply see if the bios screen comes on. if the cpu over heated and there was a safty shut down you may have to clear the cmos to get the mb to post.
looking at two parts that may have failed. one is the gpu. the easy test pull the gpu see if onboard video posts and the gpu see if it works in another pc. the other issue can be power supply failure. try using onboard gpu and a test power supply see if the bios screen comes on. if the cpu over heated and there was a safty shut down you may have to clear the cmos to get the mb to post.
 
Solution

CrackyBones

Commendable
Jan 31, 2017
11
0
1,510
Hmm, I turned on the computer one last time before cracking it open, and it seems to have completely fixed itself. I ran a benchmark, the results were the same as the day I got it. Strange