I was able to use a usb mouse to login to windows.You can pretty much be sure it's not disabled if you can still use your USB device while in the pre-boot environment. its lights will however light up for a check the BIOS and see if somehow USB was disabled. Keyboard doesn't work to go into bios and usally the num lock key is lit up at this time but isnt.By default, the inst.stage2= boot option is used on the installation media and set to a specific label (for example, inst.stage2=hd:LABEL=RHEL7\x20Server.x86_64).If you modify the default label of the file system containing the runtime image, or if you use a customized procedure to boot the installation system, you must ensure this option is set to the correct value.Keyboard and mouse not working after booting Windows - posted in Windows 10 Support: Keyboard and mouse works in bios and also in the UEFI Windows recovery blue screen, but not when Windows is booted.If the USB peripherals are the culprit of the “no boot device” issue in Acer computer, try to replug them one by one until you find out the exact one that makes your. So, you can try to disconnect all your USB peripherals from your computer, including the USB keyboard and mouse because some users report they can also trigger this problem.
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