Well there's a couple of things you could try (If I correctly understand your problem).
1st - If an error msg is coming up telling you "xxx" is disabled, then make a note of it. That's giving you specifics you need to solve the problem. Then try going to the SYSTEMS - DEVICE MANAGER in you Control Panel. Look down the list carefully. If you see any yellow or red icons on any entries, expand them and open the specific item. You should know that from this list in the device manager, you can check the operational status of every device in your PC by simply expanding the "+" sign and selecting items one at a time. If you see any colored symbols like an exclamination point, it's saying something's wrong. If you have disabled a driver for instance, it will tell you so and assist you in enabling (or downloading another replacement).
2- You should also go to windows update http://v4.windowsupdate.microsoft.com/en/default.asp and scan your PC's operating system to assure you have all the latest downloads. Just click on the "Scan" Icon and it does the rest. On the left side bar, after the scan is completed, you will see a list of "Critical updates", "XP" updates, and "Driver updates". If there are any available, they will be in ( ) following these titles. Click on them to see what they are and if you want to download them. Do download any critical or driver updates.
