So, I have windows 8.1
After installing some bad driver, I guess, my pc went into automatic repair the next time I rebooted, so I used the system restore setting. It went well and I was able to boot windows once again, but I was getting errors at times ,for example when I opened Adobe reader or BSPlayer (it was something related to system32 I guess, I didn't pay much attention to those because I don't have internet on my pc yet, so I had planed to repair the damages when I could connect my pc to internet).
To continue, I still got the errors, but beside that everything was ok. But last night my pc wouldn't shut down. I would press shut down, it would go to the "shutting down" screen and it would go back to the desktop, so I had to force shut it down from the power button because I was in a hurry and didn't know what to do.
This morning my pc got into an automatic repair loop and I tried chkdsk, system restore, and all I could find on the internet but nothing worked.
I have another computer, so I connected my hard drive to it and checked for logfiles. I don't know if I looked in the right place but I found this in e:\windows\system32\logfiles\srt\srttrail.txt
"Boot critical file e:\windows\system32\drivers\rdyboost.sys is corrupt."
I don't know what else to do. I have a bootable device with windows 8.1 on it if I'll need it, just please help me because I wouldn't want to refresh, or reinstall windows as I have game saves and a lot of useful files and apps and no internet to reinsall them.