|c0000221 relates to a corrupted driver. Drivers can become corrupt if the disk platter surfaces are failing.|
There is no way you can ever get to a c: prompt from windows 2000. You could only get there of two ways; recovery console or safe mode with command prompt.
But these are choices. It is not automatic. Coming up to a c: prompt.. does not bode well.
Check the hard drive by downloading the manufacturers diagnostics and running them.
If the drive checks out do a repair install of Win2000 to get the OS functional again.
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