Boot (and fans) fail to start when previously working computer is powered on. Motherboard or CPU to blame.

GiantCowFilms

Commendable
Sep 7, 2016
1
0
1,510
My computer suddenly died (with a very small pop that may just have been the speakers) while using an HTC Vive (although I don't think it was the Vive's fault). I attempted to restart it, and nothing happened, except a solid red warning(?) light (that I don't remember seeing before) appeared next to the CPU (more details on that later). I proceeded to debug every single component, including trying every singe ram stick individually, using different ram ports. I also ran an old GPU I had (GTX 670) in the computer, which didn't fix the issue. I also tried replacing the power supply, as well as removing all the hard drives, including the boot drive. The only component I couldn't check against was the CPU, since I don't have any other that are compatible.

Before this incident, my computer has been happily working largely without concern for about 2 months. I did notice the CPU ran a little hotter than I would have liked, but within limit. I also will note that I have not been straining it to intensely. I ran a couple of stress tests when I first bought it (using prime95), and rendered some things (using full CPU power for about an hour)

Here is the location of the light on the motherboard:

XsLSJk4.jpg


Note the light appears when the CPU is properly fitted. Removing the CPU doesn't change the behavior

I'm trying to figure out which component is bust. Is it the CPU the Motherboard, or did I miss something else? Even if its not related, I'd also like to know what that light means.

Thanks.

The details of my system are:

Motherboard: Asus X-99 A II
CPU: Intel i7-6850k
GPU: EVGA (Nvidia) GTX 1080, SC (the second lowest EVGA 1080)
RAM: G.SKILL Ripjaws V Series 16GB 2400 DDR4 (x4)
Boot Drive: SAMSUNG 850 EVO 2.5" 500GB SATA III
CPU Cooler: Cooler Master Hyper 212 EVO - CPU Cooler with 120 mm PWM Fan
Power Supply: EVGA 850 Watt Gold Super Nova

Edit (Reply to mitsoevo):

No post, nothing displayed (no bios), no fans, no beep. The only thing that happens when I press the power is that the LED comes on. There is no in-built GPU on this board. I did try it with a different compatible GPU though. I thoroughly inspectected the CPU as well, inlcuding all the pins. Everything appeared to be in order.
 
Solution
when you turn on the pc what happens, the red light comes on but does the pc beep or go try to post, does it display anything at all, have you tried using the inbuilt gpu, can you get to the bios.

EDIT: also are you sure the cpu cooler was running before it failed, and if possible remove and check the cpu, look for darkened areas on the base or the pcb.

mitsoevo

Commendable
Sep 6, 2016
64
0
1,660
when you turn on the pc what happens, the red light comes on but does the pc beep or go try to post, does it display anything at all, have you tried using the inbuilt gpu, can you get to the bios.

EDIT: also are you sure the cpu cooler was running before it failed, and if possible remove and check the cpu, look for darkened areas on the base or the pcb.
 
Solution

TRENDING THREADS