When I try to do a backup it says the system cannot find 0x8

[online_fixes]

When I try to do a backup it says the system cannot find 0x80070002. This is on Vista

Hello Carl

That error code means that a file that initializes the component being
accessed is corrupt or missing.

Try running the System File Checker which will replace and missing or
corrupt system files.

Go to Start and type cmd.exe In the results, right click the cmd.exe
file and select the Run As Administrator option. In the command dialog, type
the following.

sfc /scannow

Press ENTER.

Let me know if this corrects the problem for you.

Gary