Hi kackiz,
I assume that you don't have a System Image that you could use that was created prior to this problem?
If you don't have any success, another option is to perform a repair install.
Repair Install - Overview
A repair install differs from a clean install in the fact that it ONLY replaces the corrupted OS with a new fresh copy. This means that ALL your User Accounts, Folders, Files, Documents, Pictures, Music, Videos, Data Files, Icons, and any installed programs are left intact. It does however, delete ALL the Window updates, and can affect, sounds, services, visual effect settings and device drivers by re-setting them to default. You cannot do a repair install at boot, in Safe Mode, using a system repair disk, or using an integrated Windows update disk. Basically, this process can ONLY be performed from within the LIVE OS.
Then you can either use DISM++ or SIMPLIX to get the OS upto date with regard to WU’s [Windows Updates].
I hope this helps!