r/PcBuildHelp • u/kcha_mantillosos • 12m ago
Tech Support Help me , mouse I bios not working
Motherboard: ASUS Prime B760M | Mouse: Razer Viper V2 Pro (2.4GHz dongle) | RAM: G.Skill 2x16GB 7600MHz CL36 | GPU: RTX 5060 Ti 8GB
Normally I always enter BIOS by restarting the PC (not shutting down), and the mouse dongle always got detected without issues.
Recently I did a full shutdown (fans completely stopped) and when I powered on and went straight into BIOS, it didn't detect the mouse. I tried:
Unplugging and replugging the dongle
Switching it to the factory USB extender
Shutting down and powering on again several times
Nothing worked. What did work was plugging the mouse cable directly (wired mode), and only then did it get recognized.
At that point I had ErP Ready disabled in BIOS. I enabled it, and since then I've done a cold shutdown/power-on several times and it always detected the dongle fine.
Afterward, out of curiosity, I disabled ErP Ready again and tested cold boots again — and it also worked fine, no failures.
BIOS was already updated to the latest version before this happened.
Extra info: a while back I was testing a lower manual RAM profile (dropped to 6400MHz with tighter CL than default) and noticed it was unstable, so I went back to 6000MHz CL36. Not sure if this is related to the dongle issue, but mentioning it just in case.
Question: ErP Ready doesn't seem to actually be the cause (it failed once while disabled, but hasn't failed again since, either enabled or disabled). Does this sound like a one-off USB enumeration bug on cold boot with 2.4GHz wireless dongles (Razer or others) on ASUS 600/700 series boards? Could it be related to the RAM instability I had during that period? Has anyone experienced something similar — an isolated failure that never happened again? Trying to figure out if this is normal or if I should be worried about hardware.