I upgraded my pc to windows 10 but i didn't like it so i decided to go back to windows 7. But at the windows 7 login screen my mouse and keyboard weren't working. It only works in the boot menu and in bios menu. I guess the drivers got fucked up. I tried booting into safe mode, using different usb ports, disabling the signature driver thingy, and enabling legacy mode in bios. Is there any other possible solutions to this?