I had something really odd with the CHVI on the weekend. Started benching saturday and things were going well. I have learned that this board is bad for the mem lifting after it gets cold. Second time I have froze it and both times about 30 minutes in I have to re-seat the ram. I was pushing it pretty hard trying to get .03 more pts in CB 11.5 really wanted to beat out Roman for first and while idle it just up and quit. Pushing power gave me zero activity. I figured it must be wet and I stopped for the day tore it down to dry. Sunday I put things back together, made sure it was dry but still getting the same thing. No activity when hitting power. That's when I noticed the USB BIOS flashback light blinking. That was the weird part I didn't have a thumb drive in while benching or when I re-assembled it. But the board was stuck in a loop. Putting a proper USB in the FB slot it would go through the flasback cycle but right when it's supposed to stop it had like a hiccup and the slow "searching" light started again.
I was not a happy camper, this board has no serial #s so RMA isn't possible and I wasn't done benching the 1600x. So after a bunch of messing around I found it would start if I held the power button down while switching on the PSU. Got into BIOS and flashed it to one of the new versions. Reboot and nothing stuck no restart just a blinking FB light. Then I used the flasbak to revert to ver 902 it did work. I restarted using the same trick and verified BIOS version. Set defaults, F10 and no reboot. I needed to do a few errands so I pulled all the power and CMOS battery and let it sit. When I returned it was fully functional and the FB light had gone out. Spent the next few hours benching LN2 and not one hiccup after that.
I'm just glad it sorted out