Glad to hear that you've solved the problem.
I can not recommend the failure to use System Restore points, which is not the same as system repair, sytem image restore.
System Restore, in Win 7 works perfectly, not like we had in Vista.
System Restore has saved me from having to do a 100% reinstall several times.
I recommend using System Restore VERY STRONGLY! WIN
| type What is System Restore | Enter
where WIN is the key with the wavy flag. System Restore System Restore Point - Create Startup Repair Backup Complete Computer - Create an Image Backup