is it ok to delete XP registry entry from HKey_local_machine/system/currentcontrolset/enum/usb/vid_.../ and down

My canon camera isn't working on XP since I uninstalled Logitech WebCam. After reinstall/uninstall canon drive a few times. Nothing works, the device manager keeps hanging a yellow "?" next to Canon camera once I connect camera, if I click "property" on canon device, it shows return code 39, complaining driver being damaged. Now I want remove all stuff of canon from registry, but there are tons of loose places, expecially in HKEY_local_machine/system/currentcontrolset/enum/usb/ section. Now from where under this section can I remove the entries?


Thanks a lot.

Julie
 
AksTheExpertAsked:
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matthewrhoadesCommented:
http://www.eusing.com/free_registry_cleaner/registry_cleaner.htm

There are a lot of good registry cleaners that will figure out if registry entries are obsolete.   I would never advocate deleting anything without making a backup first.  You are probably safe deleting, but you can really put a hurtlock on yourself this way.  See the link above, I have used this kind of software successfully in the past many times.
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AksTheExpertAuthor Commented:
Thanks for the response. I did use a paid program RegCure to clean the registry. It doesn't touch Canon.
It's almost my last resort to atampt deleting driectly from registry to get rid of canon. I don't want to reintsall XP at all.

My concern really is I don't want to remove the USB port entry, but maybe what's attach to an USB port, in my case, that's the canon. I see lots of sunkey with 0001, 0002 etc. I am wondering if these subkeys are ok to be removed.

Julie
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matthewrhoadesCommented:
Export your registry to a file, remove the entries.  If all else files you can double click on the registry file to add the items back in.  
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AksTheExpertAuthor Commented:
Thanks, I'll give it a try.

Julie
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nobusCommented:
try a system restore to a previous date
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AksTheExpertAuthor Commented:
I am not ignoring this issue, I have been working on it, and I am happy to share my results with everyone:

What's really happening is my LogiTech webcam left some stuff in the reguistry after uninstall, this  prevents other image devices, camara, camcorder, even scanner/printer from working. It must be a terrible bug in LogiTech unitall, I recalled watching the LogiTech uninstall attemping to install stuff at the end of the installation.

Got hint from MicroSoft Help and Support,  Article ID: 314060, reguarding "LowerFilters" registry entry  in HKey_local_machine/system/currentcontrolset/class, but the article refer to CD-ROM, my problem is not CD-ROM, I was able to find the Device ID associated with 'Image Devices", and removed "LowerFilters" which was asigned to Logitech.

Everything is working after this.

Julie






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