update fail

[AWS]

I have a Lenovo IdeaPad U410 Ultrabook with Windows 7 64 bit installed. I bought the computer in October of last year and ever since then every time I update it fails. I always get the error message "failure

configuring windows updates, reverting changes". The latest failed updates were (KB2739159)

(KB2656356)

(KB2789645)

(KB2769369)

(KB2756921)

(KB2620704)

 

There were others too.

 

I have ignored this problem for too long and am not concerned about the security of my computer. Please help!

 

P.S.

 

Before the Restart, I get the error message:

 

Code800F0902

Code 643

 

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