Please need help on this, after disabling my USB drives and rebooting my all in one Dell optiplex 7440 a10 running win7, the mouse and keyboard do not work at windows login or safe mode but work at bios. Really need help to solve this
I actually meant disabling the USB driver, from device manager
Yep, that would do it, I mean what did you expect? You need the USB driver to run the USB ports, if you disable it, no USB ports. You may be able to do a repair Windows setup to get to a restore point before you did the change.