11-20-2017 08:11 AM
11-20-2017 09:45 AM
11-20-2017 09:51 AM
11-20-2017 10:29 AM
Are you by chance using a pcie riser cable like the one included with the Thermaltake Core P series cases?
11-20-2017 04:41 PM
11-20-2017 07:33 PM
When I had this issue on a Maximus IX Hero it was due to a single motherboard pin slightly out of place, moved it back and everything was fine after that. Did you happen to remount your CPU or maybe bumped the case causing an issue with the GPU->PCI-E contact? Check the CPU socket and try reseating the GPU. Also did a screen ever pop up notifying you about a new CPU being installed? If a pin gets bent or something similar causing PCI-E lanes to be halved the Mobo would think a new CPU was installed.
11-20-2017 09:10 PM
Nope, never remounted the CPU since it wasn't really giving me any issues. Never had the screen pop up on me unless it was the first POST screen after I had built a PC.
I reseated the GPU and it still shows x8 in BIOS. I switched GPU to a lower PCI-E slot with the same result.
I removed one of the M.2 drives and it still shows x8 in BIOS.
Then I completely removed the video card, pressed the Clear CMOS button, connected DP cable to motherboard DP port, loaded into BIOS, Loaded optimized defaults, reflashed BIOS, and turned PC off. Installed 1080 ti, launched into BIOS and it still showed x8 link speed :((((
I then installed GTX 760 that was laying around and for some reason the speed downgraded to PCI-E x1. WTF!? I removed it, installed on my older Z87K motherboard and it boots no problem with PCI-E 3.0 @ x16 in GPU-Z. I'm trying to think that it's either a BIOS issue or the mobo PCI-E slot failed somehow. I know for sure it was running at x16, but all of a sudden after going from 0505 to 0802 it just defauled to x8. Bizarre. I literally never touched anything inside the PC since I built it and everything was fine until recently.
11-20-2017 11:01 PM
Did you try reflashing in 0505 bios to see if the GPU is running in 16X again ?*
11-21-2017 02:25 PM
Yes, I reflashed it to 0505 and it still shows that GPU is running at x8 native. I then removed the 1080 ti card and put it in the Z87K board and now it shows x8 there as well so I think the issue is with the video card and not the motherboard 😞
11-22-2017 06:47 PM