Mouse & keyboard not working

[Dhanesh25]

My Keyboard and mouse are not detecting in PC. What will be the reason.
Please Help me

 

[rds1220]

My Keyboard and mouse are not detecting in PC. What will be the reason.
Please Help me

What type of port are you using the old PS/2 port or USB. This is going to sound dumb but have you tried turning the computer off unplugging the keyboard and mouse, plugging them back in and turning the computer back on?