CD-R is not there any more

In trying to control spyware I installed several anti-spy software and even deleted a few things from my register. Now My CD-R unit does not work: does not open, and is not listed in My Computer. In short, it has "dissapeared" from use and sight. I am running Windows XP professional. Please help.

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Try these steps..... They proved helpful to another user.......

1) Log on with Administrative Privileges

2) Open the Registry Editor:

a) Go to "Start" then select "Run"

b) Type "regedit" and click "OK"

3) Backup you registry by:

a) Highlight "My Computer" by clicking on it once.

b) At the top of the page you should see "File"(Win XP) or "Registry"

(Win 2000), click on this and then select "Export Registry File"

c) The following screen will allow you to select where you would like to

save this backup and what file name you would like to save it as.

d) Please note at the bottom of the screen where it says export range

"All"; this should be selected to ensure your entire registry is backed

up completely.

e) Give the File a name and Click on the "SAVE" button (this will bring

you back to the registry editor)

4) Remove the Upperfilters and Lowerfilters values by:

a) Expand the "HKEYPLOCALPMACHINE" key (looks like a folder) by double

clicking it.

b) Expand the "SYSTEM" Key

c) Expand the "CurrentControlSet" Key

d) Expand the "Control" Key

e) Expand the "Class" Key

f) Please look for a key containing the following string of letter and

numbers:3/5 4D36E965-E325-11CE-BFC1-08002BE103184/5 .

g) Highlight this key by left clicking once on it

h) On the right hand side you are looking for "Upperfilters" and

"Lowerfilters", once you find these please delete them by high lighting

(left clicking on them once) and then right clicking on them and

choosing "delete"

5) Restart your computer.

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