Keyboard and Mouse not working upon start up

[Mikems18]

So i recently built a new computer it booted up fine and then i started to install drivers i put in the msi disk installed the drivers then i restarted... Once i restarted i experienced the USB mouse and keyboard not working i plugged in a PS/2 keyboard and mouse but no luck i really need a response quickly do to a suprise and help is much appreciated (when explaining dumb down a bit)

Side Note: Mouse and Keyboard Work In bios

Specs
Intel i3 (weak ik) cpu
2x8gb Gskill ram
750w corsair modular psu
windforce gtx 970 GPU
msi z97 PC Mate (mobo)

 

[thepolicecall999fordetails]

So i recently built a new computer it booted up fine and then i started to install drivers i put in the msi disk installed the drivers then i restarted... Once i restarted i experienced the USB mouse and keyboard not working i plugged in a PS/2 keyboard and mouse but no luck i really need a response quickly do to a suprise and help is much appreciated (when explaining dumb down a bit)

Side Note: Mouse and Keyboard Work In bios

Specs
Intel i3 (weak ik) cpu
2x8gb Gskill ram
750w corsair modular psu
windforce gtx 970 GPU
msi z97 PC Mate (mobo)

Same problem here....

So darn frustrated since school is starting in a week and I do not have my main PC working.

"I recently tried updating my computer to the latest driver software. During the update, I noticed a loss in my mouse and keyboard. I could not type nor use the keyboard to check the status of the update. I left it alone for a while and found that the problem was not resolved. I held down the power button in frustration and found (later after a reboot) that I cannot get passed the log in screen. No keyboard and mouse = no way of entering the password.

I have a NVIDIA GTX 660 Ti and Windows 8.1

I have tried safe mode, system repair, and NOTHING WORKS!

I would use system restore, but for some reason....

ALL MY BACKUPS WERE DELETED!
Please help. I am stuck without options right now..."