Do you have any McAfee software on your computer?
If you do try running the MVT found under Useful Links at the top of this page under Technical Support link. MVT will generate a report of any McAfee errors and will attempt to fix any it finds. Please let us know the details of the report that is generated at the conclusion of the scan.
We will also need to know some more details about your computer as far as the type of internet connection, amout of available RAM. You have already mentioned it is Windows 7.
Wonder if your issue is just a Microsoft issue?
I doubt this has anything to do with McAfee software, if it's installed, as it would automatically allow all Windows Updates to proceed.
You might find better help from a specialist forum such as http://www.sevenforums.com/
Broken updates can be caused by a number of things, one of them would be the use of registry cleaners. have you been using those? If so do they have a restore button?
This System File Check tutorial may be of help: http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checke r.html
Also if this is plain 7 and not 7 SP1 (you can check that by right-clicking Computer on your desktop of in the Start Menu and selecting Properties) you can install Service Pack 1 as a standalone: http://www.microsoft.com/en-us/download/details.aspx?id=5842 because plain 7 without the service pack is not supported by Microsoft anyway. See here: https://community.mcafee.com/docs/DOC-2205
Note: that last part only applies if the system is not Windows 7 SP1.
I have an Acer Travelmate 5735 with 2gb RAM, with Window 7 Pro ans Service Pack 1, McAfee Internet Security Suite.
I have a Virgin Media Internet connection, wifi.
Thanks for that information. I would post on the Windows 7 forum that I suggested as I doubt this has anything to do with McAfee.
Have re-installed Windows. Problem gone. Fed up of trying fixes.
Well that's what I usually end up doing when all else fails. Good luck ;-)