Or if the above option doesn't exist, make sure USB 3.0 is switchable:Īlso set these options if you have them, this adjusts how BIOS hands over the USB controller to the OS when it needs it: Windows 7 has no need for BIOS legacy support, in fact it can interfere sometimes, so set these options:Īlso make sure USB2 support is enabled, if the option exists: They might not read exactly as I've written them but you'll spot them if they're there. When you get into BIOS setup, trawl through all the various menus and sub-menus and try find the following options. Your motherboard manual will have instructions on how to enter BIOS setup. You may need to adjust some settings in your BIOS. This trick has worked for me in the past. Knowing this, you can overcome possible BIOS USB bugs by booting into Windows seutp exactly as you did, wait until the choose language screen appears, then without turning the computer off or rebooting unplug the keyboard and mouse and plug them back into different USB ports. It will detect USB device insertions and removals. This may seem counter-intuitive but Windows 7's USB stack is fully operational during setup. None of them do anything bad to your system. Meanwhile I have two solutions you may try. You can edit your question to include the specs. You haven't given us any details about your PC (motherboard, keyboard, mouse make and model).
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