Hi Celestra
You could use System File Checker to check and repair the damage files.
On Vista, open Windows Explorer then look for C:\Windows\System32\cmd.exe
Right-click cmd.exe, then click "Run as administrator"
In the Command Prompt windows, type SFC /scannow
Hit Enter key of the keyboard.
Allow it to scan the system to hopefully fix any damage items.
Reboot when done.