Registry problem.

A

Arthur Steed

Please can anybody help me?
I have a problem accessing my DVD hardware. I have tried uninstalling and
reinstalling the driver but it always fails with error 19.
I have looked in the registry and can find the relevant dvdrom entry, so I
tried deleting it. The delete failed again with error 19. investigating
further I find that I can access all lower level items except properties. If
I try to open this I get error 19. I can't delete it or rename it, all fail
error 19. I have tried rolling back at least two months but I don't know
when the corruption occurred.
Can anybody suggest anything else which may let me delete the dvd node in
the tree along with all sub nodes? so I can reinstall the driver.
Please respond by email to (e-mail address removed) Thanks in advance for
any help you can give me.

Arthur Steed
 
G

GlowingBlueMist

Please can anybody help me?
I have a problem accessing my DVD hardware. I have tried uninstalling
and reinstalling the driver but it always fails with error 19.
I have looked in the registry and can find the relevant dvdrom entry, so
I tried deleting it. The delete failed again with error 19.
investigating further I find that I can access all lower level items
except properties. If I try to open this I get error 19. I can't delete
it or rename it, all fail error 19. I have tried rolling back at least
two months but I don't know when the corruption occurred.
Can anybody suggest anything else which may let me delete the dvd node
in the tree along with all sub nodes? so I can reinstall the driver.
Please respond by email to (e-mail address removed) Thanks in advance
for any help you can give me.

Arthur Steed
Click to expand...
You might try booting into safe mode, then go into the system control
panel | device manager and delete the entry for the DVD.

Then boot the computer in the standard mode and let it re-discover the
DVD all over again.
 
P

Paul

Arthur said:
Please can anybody help me?
I have a problem accessing my DVD hardware. I have tried uninstalling
and reinstalling the driver but it always fails with error 19.
I have looked in the registry and can find the relevant dvdrom entry, so
I tried deleting it. The delete failed again with error 19.
investigating further I find that I can access all lower level items
except properties. If I try to open this I get error 19. I can't delete
it or rename it, all fail error 19. I have tried rolling back at least
two months but I don't know when the corruption occurred.
Can anybody suggest anything else which may let me delete the dvd node
in the tree along with all sub nodes? so I can reinstall the driver.
Please respond by email to (e-mail address removed) Thanks in advance
for any help you can give me.

Arthur Steed
Click to expand...
With respect to fixing this by hand (with regedit), be careful!

There are a number of GUIDs with Upperfilter entries. If you
delete the wrong one (such as one related to keyboard), you
can suddenly lose usage of your keyboard, which can be
quite embarrassing. Notice that some of these entries, have
values that almost look identical, and you have to look at them
several times, to spot the difference. Don't delete the keyboard one!

http://pcsupport.about.com/od/driverssupport/a/device-class-guid.htm

At the very least, use System Restore, to set a restore point, so
you have at least one copy of "good" registry, before going
on a "delete spree".

By comparison, the "fixit" in the article Peter Foldes provided,
should only attack the one GUID, rather than going on a spree.
So the Fixit should be safer. But if the Fixit doesn't work,
or you're still getting indications of corrupted registry, then
another approach may be required. Such as uninstalling the
driver for the DVD drive, and letting Windows discover the
hardware on the next reboot. Since the DVD drivers are built-in,
uninstalling them in Device Manager, does no permanent harm.
There are no "DVD drivers" to download from your computer
manufacturer - they're part of the OS.

for example, my optical drive right now, uses

cdrom.sys
imapi.sys
redbook.sys
storprop.dll

and those are all Microsoft files. If I uninstall the driver,
when Windows discovers the "new" hardware on the next reboot,
it installs those driver files again for you. One would hope
the positive side effect of all this, is a fresh "ENUM" entry
for the drive, which is the point of doing this. But I don't
really have a warm feeling about the ability of Windows to
remove associated information. So if the Fixit doesn't work,
you can "try it and see", whether uninstalling the DVD helps
or not. Uninstalling would be an attempt to flush the ENUM
information, and make a new entry. Without manually going into
the registry and attempting to hack it out of there yourself :)

Have fun (and have your backup image handy...),

Paul
 
A

Arthur Steed

Thanks for your reply: can you tell me how to boot into 'SAFE MODE' under
windows 7.
I have a Toshiba Satellite L350 laptop, but cannot find a way into safe
mode :-(

Thanks
Arthur Steed

"GlowingBlueMist" wrote in message

Please can anybody help me?
I have a problem accessing my DVD hardware. I have tried uninstalling
and reinstalling the driver but it always fails with error 19.
I have looked in the registry and can find the relevant dvdrom entry, so
I tried deleting it. The delete failed again with error 19.
investigating further I find that I can access all lower level items
except properties. If I try to open this I get error 19. I can't delete
it or rename it, all fail error 19. I have tried rolling back at least
two months but I don't know when the corruption occurred.
Can anybody suggest anything else which may let me delete the dvd node
in the tree along with all sub nodes? so I can reinstall the driver.
Please respond by email to (e-mail address removed) Thanks in advance
for any help you can give me.

Arthur Steed
Click to expand...
You might try booting into safe mode, then go into the system control
panel | device manager and delete the entry for the DVD.

Then boot the computer in the standard mode and let it re-discover the
DVD all over again.
 
G

GlowingBlueMist

Says here, to use the F8 key.

http://windows.microsoft.com/en-US/windows7/Start-your-computer-in-safe-mode


Then, you might see something like this.

http://0.tqn.com/d/pcsupport/1/0/X/4/-/-/safe-mode-windows-7-2.jpg

Paul
Click to expand...
If you can not gain access to the safe mode using the F8 key during a
reboot you can use the msconfig program. Here is a link showing how to
use it: http://www.bleepingcomputer.com/tutorials/tutorial61.html
Click on the Windows 7 entry in the Table of Contents and it will take
you to the instructions for using msconfig.
 
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