I have tried man a times to update hot fixes etc from windows update ,but they always seems to download ,then my PC goes through hell lot of start up etc ,but then update history says it failed .

If i cancel the error code 8024000b is encountered ,

but after a full update download and installation it shows failed with error code 800F0826 .
I have reinstall the operating system 2 times (I do it by a ghost image ) and yes it shows that it is genuine . Then what is the problem . Is there any third part sites which can provide me with individual updates .