|I would suggest you try a full System Restore once you're logged in to see if you can roll back the changes.|
How long has the problem existed for? Choose a date when you knew the computer was working reliably.
Then go to:
Pick the Restore and you might have a chance of rolling back whatever has gone wrong. The problems with music and opening files in Safe Mode is to be expected because it only provides limited functionality for you to diagnose problems...
The Definitive Guide to Registry Cleaners &