Windows 7 Update stuck/reverting/shutdown

[Patrick4444]

I turned on laptop this morning.. it said updating update 78 of 160.. i Waited until it went to 160, which took 90minutes or so..

Then it said stage 1, then stage to, and onto stage 3...
It was stuck on 15% for well over an hour and half, now it says
stage 3 of 3, reverting changes...

It stays on this for over half an hour and then just shut downs the laptop?

I tried to boot in safe mode.. and it still shows the stage 3 of 3 reverting changes..
I wanted to boot into safe mode as I have created a restore point before all this happened when everything was fine.

I tried boot from disc to repair computer but now I'm told it's the wrong disc.. is there any software I can downlaod to try repair the pc or why would this be happening??

I recently installed AVG Pro.. might this be causing it.. is there any way I can uninstall AVG any other way if I cannot log in normally or to safe mode? To rule out that

 

[Patrick4444]

Just thought I'd update, been trying it for last 2hrs..

Update:

To rule out if it was AVG or not..
I booted of a cd to run Mini XP..

After doing this I located AVG folder and renamed it so it would not run on boot up.

I restarted laptop and it allowed me to boot into safe mode..

So I restarted the laptop to boot from Win 7 disc..usually I get option to install new, 3 options box..
it came up with a different screen, i clicked next to and it showed system restore etc..

I clicked restore, it showed 2 restore points. One from 2days ago when it was runnign fine, so i selected that.

It seemed to be working fine until the end, it said, could not finish restore poitn as AVG could not be restore..

This must mean the problem lies with AVG install yes?

ANY help would be great, thanks.

 

[NoelDP]

This must mean the problem lies with AVG install yes?

No - it simply means that there was a problem with System Restore's attempt to restore AVG. This could be for any number of reasons, unrelated to AVG itself.

I'd rename the AVG folder back to what it should be, and then UNINSTALL it while in Safe Mode.
Boot back into Safe Mode with Networking, and install Malwarebytes and run a full system scan.

Please download and install Malwarebytes Anti-malware (free version) from http://www.malwarebytes.org/products/malwarebytes_free/ - UNtick 'Enable free trial of MBAM PRO' at the end of the installation - and update it, then run a full scan in your main account, and Quick scans in any other user accounts.

Delete everything it finds