Have an ROG STRIX B550-F Gaming (Wifi) motherboard in a system that I built a couple of months ago (around 2020-12-01). Around a week ago, after a restart, system will not boot to OS - the first three QLEDs (yellow - red - white) cycle, but the green LED never illuminates. The motherboard doesn't lock to white; it cycles (yellow - red - white - yellow - red - white....). Using the CLRTC jumper and then restarting, I can get into BIOS; everything there seems fine, all hardware registers, and I can run self-tests on my SSD and similar. If I try to boot from there to the SSD or to a USB recovery disk, though, I just get the cycling QLEDs and never get to a boot attempt. I've tried flashing the BIOS to latest (1801 according to the ASUS website), which worked but didn't solve anything.
Anyone have any experience with this sort of thing? Any tips? Prior to this system, it's been a while since I built my own PC (15 years?), and I'm a bit rusty. Any help would be appreciated.
Anyone have any experience with this sort of thing? Any tips? Prior to this system, it's been a while since I built my own PC (15 years?), and I'm a bit rusty. Any help would be appreciated.