Vista
When I try to upgrade an earlier version of Windows to Windows Vista, I receive an error message: "Windows could not update the computer's boot configuration"
WARNING:Caution There can be many instances of the registry subkey that is mentioned in step 3. You must make sure that you are in the appropriate registry subkey before modifying the UpperFilters and the LowerFilters values. To verify that you are in the appropriate registry subkey, make sure that the Default data value is DVD/CD-ROM and the Class data value is CDROM.
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Step 1: Start Registry Editor
Click Start, type regedit in the quick search, and then click the regedit icon in the search results.
Registry Editor starts.
Step 2: Delete the UpperFilters registry entry
1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE.
2. Expand SYSTEM
3. Search for the key {4D36E965-E325-11CE-BFC1-08002BE10318} by unchecking the Values and Data options in Look At in the find dialog.
4. In the right pane (topic area), click UpperFilters.
Note An UpperFilters.bak registry entry may also appear. To delete the UpperFilters registry entry, you must click UpperFilters and not UpperFilters.bak.
5. On the Edit menu, click Delete.
6. When you receive the following message, click Yes to confirm the deletion of the UpperFilters registry entry:
Are you sure you want to delete this value?
The UpperFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey.
7. Repeat steps 3 - 6 until you have removed all of the UpperFilters entries from the registry (There can be multiple if you have multiple ControlSet keys present.
Note Do not exit Registry Editor. You must have this program for the next step.
Step 3: Delete the LowerFilters registry entry
1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE.
2. Expand SYSTEM.
3. Search for the key {4D36E965-E325-11CE-BFC1-08002BE10318} by unchecking the Values and Data options in Look At in the find dialog.
4. In the right pane (topic area), click LowerFilters.
Note An LowerFilters.bak registry entry may also appear. To delete the LowerFilters registry entry, you must click LowerFilters and not LowerFilters.bak.
5. On the Edit menu, click Delete.
6. When you receive the following message, click Yes to confirm the deletion of the LowerFilters registry entry:
Are you sure you want to delete this value?
The LowerFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey.
7. Repeat steps 3 - 6 until you have removed all of the UpperFilters entries from the registry (There can be multiple if you have multiple ControlSet keys present.
8. Exit Registry Editor.