Windows 7 keyboard and mouse don't work

[simik]

2 days ago i was just surfing the internet and checking my mail.then suddenly,my keyboard and mouse stopped working.i tried doing something in BIOS setup,but i just can't come up with an answer.can someone help me with my problem?
thank you!

 

[Saltgrass]

Should we assume these are both USB devices, and if so, do other USB devices still work?

Have you tried changing ports and/or doing a cold boot?

You might try unplugging other USB devices.

In Device Manager, do you USB devices still show as normal?