Both my usb mouse and keyboard are not working, Please help!

Hi guys,

I am currently using wins xp, all along i had no problems with my keyboard n mouse as they are plug and play.

but recently, i updated the driver of my mouse… and then for gaming experience reasons.. i decided to roll back the old driver…

after i did that, both my mouse and keyboard wouldnt work at log in page of windows…

I could do f8 upon restart and enter safe mode… but my keyboard and mouse wouldnt work upon reaching the log in page of windows as well…

i am quite lost now… is there anyway to remedy?

Thanks in advance!