|OK, so it appears as if the problem is more than just a missing driver. .dll issues are a separate one and inability to install updates, again, is a separate thing. Is this something that happened suddenly or has it been a gradual deterioration? I honestly don't think this is something you can fix piecemeal unless you do have specific error messages that you can make a note of.|
If it has happened suddenly and recently then a System Restore would be the first thing to try. If it has been a gradual thing then unless you want to take it to a technician to look at your best option is to back up your data and then do a repair install of Windows 7. While you system is still sort of useable, it would be a good idea to attempt to create the system recovery disks if you have not already done so.
"I've always been mad, I know I've been mad, like the most of us..." Pink Floyd