Vista - The blue screen of death...

I keep on getting the famous blue screen of death, and then when I turn my
computer on, this message comes up: Problem caused by Device Driver

You received this message because a device driver installed on your computer
caused the Windows operating system to stop unexpectedly. This type of error
is referred to as a "stop error." A stop error requires you to restart your
computer.

More information

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Problem report summary


Problem type
Windows stop error (a message appears on a blue screen with error code
information)

Solution available?
No

What does this problem mean?
Windows has encountered a problem it cannot recover from and it needs to be
restarted

Cause
Unknown

Computer symptoms
A message appears on a blue screen with error code information (for
example: 0x0000001E, KMODE_EXCEPTION_NOT_HANDLED)

Additional steps for you to take
Please continue to send problem reports so analysts at Microsoft can study
and try to correct the problem as quickly as possible

What should I do?