I also tried the second method to identify the volume, but could not find it. Under 'disk drives' there was just one entry, but with a different guid.
Type Device Manager in the Search box above the Start button and press ENTER. Are there any yellow question marks in Device Manager? If yes what is the Device Error code.
To see Hidden Devices (Non Plug and Play Drivers) you need to select View, Show Hidden Devices. It is necessary to do this every time you open Device Manager if you need to see them.
A further complication can be Ghosted Devices –installed but not connected!
http://www.lockergnome.com/windows/2005/04/29/display-hidden-devices-in-device-manager-xp/
Select Start, All Programs, Accessories, right click Command Prompt, and click
Run as administrator from the drop down menu.. Type
*cd* and press ENTER. Type "chkdsk c: /r" without the quotes and hit ENTER. Make sure you include the spaces indicated. Enter
Y when asked whether you wish to run chkdsk on restarting the computer. Type
exit, press the ENTER key and restart the computer.
Please run System File Checker and say if it cannot fix corrupted files:
http://support.microsoft.com/kb/929833