Windows 7 wont update (error 8008005)

[nth]

Hi, this problem has been going on for about a year now, it started with there being 2 or 3 updates that would not appear to install, every time I checked for updates the same updates were always there. over the months I have tried various different things I have read on the internet. Im now at the stage where windows wont find any updates & I get this error code 8008005.
I have tried the sfc /scannow thing that wont but im getting the windows could not start the repair service message. the windows module installer is set to manual but when I press start I get error 126: the specific module could not be found.
I have also tried to install the CBS zip folder but it says the file size is too large (10.9mb).
I don't know where to go from here, Please help me.

 

[NoelDP]

if you delete the oldest CBSPersist files from the compressed folder, you should be ablt to get it below 8MB and upload it.

 

[nth]

OK deleted a couple of files last modified in 2013.

 

[NoelDP]

Like London busses - never see them for months and then get two at once!
Unfortunately this is not good news
The probability is that there is a huge section of your registry missing.
Your only realistic option is going to be a clean install (repair installs almost always fail with this type of error)

 

[nth]

Was hoping to to get that answer. oh dear, better start backing everything up. Thanks for your help.