For the 8007000B error message try this:
1. Click Start, and then type cmd in the Start Search box.
2. In the search results list, right-click Command Prompt, and then click
Run as
Administrator.
3. When you are prompted by User Account Control, click Continue.
4. At the command prompt, type "fsutil resource setautoreset true C:\ ",
without the quotation marks and then
press ENTER.
5. Reboot your machine and try to update again
http://forums.techarena.in/showthread.php?t=718809