Keyboard and mouse not detected

November 22, 2011 at 00:21:54
Specs: Windows 7, 4
I have new Dell Optiplex 780 it works properly before this happen, now keyboard,mouse all not working it displays the message "keyboard now detect - please connect the keyboard to usb port" even I can't enter to BIOS/Setup and it don't have PS/2 port to try PS/2 keyboard please . . . any one can help me,please.

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November 22, 2011 at 09:43:38
Did you try restarting Windows?

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