Usb Keyboard not working

[scoutmarine]

I was using my computer I plugged in my usb drive and my mouse and keyboard stopped working.
I have tried reseting the CMOS and tried using a ps/2 keyboard.
It is a foxconn motherboard, amd Athlon 64x2 Dual Core Processor 6000+, 2 2gb gskill ram sticks, Gigabyte NVidia Gforce GTS 450 Graphics card, Rosewill RX950-S-B, 950 Watt Power Supply, and Western Digital 150gb wd1500AHFD-00RAR1.

 

[scoutmarine]

When I plugged in the flash drive it installed a driver then this happend, also is it supposed to stay at the post screen?

 

[hytecgowthaman]

Psu problem.check psu fan correctly working or try in other Psu.if problem continues update bios ,hdd and Gpu firmware .
Check the removable devices are working in other system.if working problem in usb ports.(if Psu problem can also do this ).

 

[scoutmarine]

I fixed it by unplugging the front usb port connector