Unsigned drivers  

a while ago (over a month) found that i could not use my mouse or keyboard unless i disabled driver signature enforcement on boot

just today, i ran sigverif and found that these drivers are unsigned: sugi1ci.dll wudfcoinstaller.dll usbehci.sys usbhub.sys wudfpf.sys wudfrd.sys

but i think this is part of a larger problem, since some applications that i installed before it happened don't work, and the system tends to hang

i ran sfc /scannow and it said something like, "found corrupted files but couldn't repair them"

i have attached the relevant bit (the part started today) as a txt file since i can't make sense of it, if anyone could look through it that would be great thanks

the sigverif log is also attached

See if this article will help. At least it will shorten the log file you need to analyse.
How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program generates in Windows Vista

What mouse and keyboard do you have?

both the mouse and keyboard are from dell

i could reinstall the os if there's no other option, but i really don't want to do that
i already did earlier today but later decided to restore an image from 3-8-11 and try to fix it the hard way