Posted 01 June 2010 - 11:19 PM
Wow, if you're that low on free space, it can cause unpredictable problems since Windows needs some room to work with for the page swap file, i.e. virtual memory where the HDD can be used as temporary RAM when necessary. Also, you probably haven't defragged in a while since you need at least 15% free space.
However, I'm not sure if the error 1921 is related to low free space. I've only seen the error once here, and my knowledgable commrade casey_boy recommended uninstalling the old version with Revo and reinstalling the new version.
Note, you may need to clear up some space anyways since I'm sure version 8.2 will need more space than 7.1, although it might not be too much. To clear up space, be sure to clear all your temp files and browser caches, they can get rather large. Also, as long as your system has been stable, you can turn off system restore to delete all the old restore points, then turn it back on to create a single, new restore point. On my system, each restore point is about 25-50 mb.
Then, instead of using an uninstaller, you can do a manual clean uninstall. I'll post instructions, but be careful anytime you start deleting stuff from the registry:
Uninstall Programs Manually
Just because Windows XP has the Add/Remove Programs feature it doesn't mean your application will appear in the list. Furthermore, even if it does appear, it's no guarantee that the uninstall feature will work. When you run across one of these situations the items listed below will help in getting rid of the application. Be aware that these steps may not remove everything associated with the application and can impact other applications on the computer. Have a backup or restore point and use caution.
Find the directory for the application and delete all the files in the directory. Delete the directory.
Open regedit and navigate to HKEY_LOCAL_MACHINE\SOFTWARE and find the folder for the application. Delete the folder.
Open regedit and navigate to HKEY_CURRENT_USER\SOFTWARE and find the folder for the application. Delete the folder.
To remove the application entry from Add/Remove Programs (if present) open regedit and navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall and find the folder for the application. Delete the folder.
also check:
SOFTWARE\Classes\Drive\shell\ for program or company name
SOFTWARE\Classes\Directory\shell\ for program or company name
Some applications have Services attached to them. If this is the case, navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services, locate and delete the service.
In Windows Explorer, navigate to the individual user settings and delete program references. Common places to check would be:
C:\Documents and Settings\All Users\Start Menu\Programs and delete relevant entries.
C:\Documents and Settings\All Users\Start Menu\Programs\Startup and delete relevant entries.
C:\Documents and Settings\%YourUserID%\Start Menu\Programs and delete relevant entries.
[Do this for each User ID listed]
C:\Documents and Settings\%YourUserID%\Start Menu\Programs\Startup and delete relevant entries.
[Do this for each User ID listed]
If no entries were found in the previous step and the application launches automatically, navigate to
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows
and delete the entry.
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