Windows 10 services

I am running Windows10 on a Dell Inspiron 530. 3GB of RAM and a 250GB hard drive with 80GB empty. After having several problems involving updating, windows mail and blue screens, I decided to restore back to a time when all was well. After the restore, I had more problems, including no internet connection. I checked for malware and viruses, but when I used Task Manager to look at Services, most of them were disabled. I worked through the list and where I could, changed them to automatic start. I can now get online but cannot get updates, the windows calculator won't run, nor will windows defender, although the firewall runs ok. Windows live mail 2012 takes 5 minutes to start, and will not get new messages from the server. Can anyone help please?
Thank you

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This is either some malware you didn't find or

Failing hardware. 3GB of RAM tells me this may be an older laptop. Did it's owner keep up with the usual 1st or the month canned air cleaning? And did you try another HDD?

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It is a PC dated 2007

What is "1st or the month canned air cleaning"

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Sorry, just checked some specs.

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