Seeker - I'm assuming you are running a Windows machine here... Using Mrs. A's post for inspiration, the way forward may be to go backwards!
Can you remember when your machine worked correctly the last time? Try powering down your machine completely, ie switch off, AND remove the battery for a few minutes, and then power-up, and perform a system restore from a date that you know the machine worked OK. (Use the Windows help menu to guide you through the restore process.)
If your drivers have become corrupted, then this should hopefully get you back to a known good configuration, rather than running the gauntlet of installing new un-tested software.
Good Luck,
The Mac enabled Mackem
