Windows update won't run/scan.it's on in services but computer says...

....otherwise.

I just got my laptop from service (they replaced a new hard drive and installed windows 7). It is a Sony Vaio ....i own it now but it's a slightly used rent-to-own type of deal so no windows dvd or system restore or anything.

They supposedly restored my computer to factory setting but I can't update my computer.

The bar to the left is red and i see a red shield with a white x and it says most recent checks for updates: never

updates were installed: never

i go to installed programs and nothing has been installed since early 2010.

It's like whenever i try to click check for updates button it's like something is blocking it from connecting and scanning is the best way I can explain it. I desperately need help to update all my software and security patches etc
I found something online where it says to type services.msc and stop it and go to c/windows/softwaredistribution and delete the files and then start the service so then ....
windows updates still won't scan (windows 7)....says service is not running but it is.

Download the free version of Malwarebytes : Free anti-malware, anti-virus and spyware removal download update it, run it.
If any threats found, make sure all are selected (check mark beside their names) and select 'remove selected'. A log in notepad will open. Copy and paste that here.
Also see this- How do I reset Windows Update components?

I thought I should mention that after encountering this problem of Windows Update refusing to work saying that it's service hasn't been started, I managed to FINALLY fix MY issue by doing what the original poster actually alluded to:

"I found something online where it says to type services.msc and stop it and go to c/windows/softwaredistribution and delete the files and then start the service so then ...." (the service referred to is Windows Update service)

All the other many supposed solutions I found online (like those having to do with Intel Rapid Storage Technology Drivers) did not help. My problem occurred after Windows 7 became corrupted (for the first time in years) and I had to do a partition restore from Acronis True Image Home 2011. The restore worked other than Windows Update - which is a pretty big failing. Nevertheless, my trust in Windows 7 has been severely damaged.