Black screen problem at boot. Faulty PSU or another reason?

dyanikoglu

Reputable
Feb 1, 2016
4
0
4,510
My Specs;
- ASUS M5A97 LE R2.O moba
- Gigabyte GTX 780 Windforce 3X OC
- AMD FX 8350 Black Edition
- 8 GB RAM
- Xiagmatek Tauro 500w Bronze 80+
- Cooler Master Seidon 120V Water Cooler for CPU

2 weeks ago, my bios started to show my CPU fan speed(Pump's 3 pin connector was connected to cpu fan on the moba) as 0 rpm at boot. After that CPU was overheating and my computer was closing itself. I fixed that problem with 2-3 times power cut-off from PSU everytime I open the computer.

Yesterday I cannot fixed that with power cut and tried to replace my water cooler with stock cpu fan. Everything was normal, after 30min of usage computer closed itself suddenly. I checked my rig, but there was no smoke or fried part on the motherboard, PSU, GPU or CPU after that. I tried to power on my computer back, but I'm seeing just black screen right now. CPU fan works, GPU fan works, led gives green light, everything seems normal.

I removed my bios battery for 1 hour, it didn't work. Tried resetting CMOS with jumper, but it didn't work too. Removed all of parts and connected them back to motherboard, but problem still exists...

I connected another GPU to my motherboard, still black screen. I connected my PSU(I don't have another PSU) and GPU to another motherboard, still black screen on that different rig.

I wonder if my problem is just with PSU. Is there any possibility that there are problem in my CPU, GPU or motherboard? If my PSU was faulty, could my rig's other parts be damaged? If my GPU or CPU was dead because of PSU, I'm dead too :(

Thanks If anyone can help me with that problem :(
 
Solution
You may kill your Xiagmatek Tauro 500w PSU, because the gtx780 requires 42Amp on the +12 rail, but that PSU has only 32A on the +12V.
You may test the PSU by the paper clip method. http://forum.corsair.com/v3/showthread.php?t=63991 And anyway you should buy other PSU. Also don't oc the fx8350 too much on the ASUS M5A97 LE R2.O too, because the MB has only 4+2 power phase count with no heatsink on it. So if you oc the fx8350, and that will cause the VRMs section overheat and shut down the PC. You had the water cooler so I think you are ocing the fx8350. If you want to oc may get other MB like MSI 970 gaming, asus M5A97 EVO r2, or ga-970a-ud3p.

You should get the better PSU that is at tier 2 or up for your gtx780...
You may kill your Xiagmatek Tauro 500w PSU, because the gtx780 requires 42Amp on the +12 rail, but that PSU has only 32A on the +12V.
You may test the PSU by the paper clip method. http://forum.corsair.com/v3/showthread.php?t=63991 And anyway you should buy other PSU. Also don't oc the fx8350 too much on the ASUS M5A97 LE R2.O too, because the MB has only 4+2 power phase count with no heatsink on it. So if you oc the fx8350, and that will cause the VRMs section overheat and shut down the PC. You had the water cooler so I think you are ocing the fx8350. If you want to oc may get other MB like MSI 970 gaming, asus M5A97 EVO r2, or ga-970a-ud3p.

You should get the better PSU that is at tier 2 or up for your gtx780. http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html
 
Solution