Problem
-------------
Windows explorer shows this list of drives:

Hard Disk Drives:
System (C
UserData (D
UserData (G THIS IS A DUPLICATE OF THE ABOVE DRIVE

Devices with Removable Storage
CD Drive (E
DVD Drive (F

Other:
Local Disk (H WITH QUESTIONMARK

Clicking on G: works fine, I can work with this drive. All I do here is
also done for D:\. Two letters, same drive then...

Clicking on H: leads to this error: "H:\ refers to a location that is
unavailable. It could be on a harddrive on this computer or on a
network. ..."

Running "diskmgmt.msc" shows this list (I omit CD /DVD):

EMPTY, Partition, Basic, Healthy (EISA
CONFIGURATION)
System (C, Partition, Basic, NTFS, Healthy (System)
UserData (D, Partition, Basic, NTFS, Healthy

System and EISA Conf are two primary partitions, Userdata is in the
extended partition and fills it out completely (As a logical drive, of
course). All partitions are on the same physical drive.

Conclusions:
Device Manager shows correct information and explorer does not!


My attempts to solve it:
------------------------------------

- inside device manager I removed the d: drive letter assignement. It
was gone. G: was still available
inside explorer. Devmgr showed no drive letter at all, while explorer
could access it with G:
(cmd as well)

- I deleted -all entries in HKLM\System\MountedDevices, but the
default entry
-all entries in
HKCU\Softw\MS\Wndws\CrrntVrs\Explorer\MountPoints2
-the same entries in the HKEY_Users\.DEFAULT branch
-supect entries in
HKCU\Softw\MS\Wndws\CrrntVrs\Explorer\MyComputer\N ameSpace
-then I created a new user account in order to get a
fresh profile to compare
Then reboot and login as new user:

Explorer shows the same damn thing: G: (as a duplicate of D and
H: with question mark an error on click.
Config.sys and other old DOS things are size 0.

Interesting:
Starting Windows in safe mode works fine. No wrong entries in explorer!
Starting normal and killing all non standard processes has no effect.
Wrong entries remain. (I terminated all non standard services.) No lead
"who" is responsible....

Now I am out of ideas! I How can I make the explorer forget those
drives?
Any help is VERY appreciated...

kind regards
antares