I recently updated flashed my bios for gigabyte model motherboard GA-MA770T-UD3P. The utility said the flash was successful, etc. I restarted the computer and successfully booted into Windows. But, mouse and keyboard did not work.
So I tried using a PS/2 adapter for my usb keyboard, but that was not detected either.
The keyboard does not work when booting, and I cannot use it to get into the bios. I tried resetting the CMOS, but I cannot change the bios settings to default, because my keyboard does not work to choose that option.
I was thinking that perhaps I should try to get an actual PS/2 keyboard, although not sure if that'd do anything. I'm unsure if my cd-rom drive still works, but I might be able to flash it again using the cd rom drive.
I have a Gigabyte GA MA770DS3 AM2+ board, when first installing it the BIOS did not recognize a USB keyboard by default so I had to dig out an old PS2 one I had lying around, then enter BIOS and activate USB. I was a little stumped for a while!
Well, I got it to work by plugging in a PS/2 keyboard. It's odd that the adapter didn't work. I was able to get into the BIOS and reset to defaults. Now everything works. Letting everyone else know just in case people have a similar problem.
I have your problem with my Gigabyte EP45-UD3L but can press Delete to inter Setup.
Enable (USB keyboard function) and (USB mouse function) in the (integrated peripherals) in setup to can use usb keyboard.