Hi Skomro, welcome to G2G.
Since you are able to boot to Safe Mode with Networking, this should not be too hard to fix.
First, run chkdsk and see if that fixes it.
Click on
Start then
Run, type
chkdsk c: /r and press
Enter or click
OK. Reply Yes when asked if you want this to occur on the next boot. Shutdown and reboot, see if that fixes it.
If not, boot to Safe Mode again and use System Restore to go back to a date before this happened.
Click on Start, Programs, Accessories, System Tools and finally System Restore.
This MS article has a lot of good information on using System Restore:
http://www.microsoft...temrestore.mspx