Need recovery disk

try boot in safe mode by pressing F8 during start up
the run a virus scan and a adware scan. the problem your have sounds to me like something like a trojan or something has changed some settings in your computer, for instance, they have the ability to shut off windows update, program updates, take programs out completely, and also turn off restore points.
you can also go into control panel and system restore and check to see if there are any restore points available and turn back on the system restore function if it has been disabled.
But anti-virus is a really good place to start unless you want to format your drive and install you Operating System fresh, but I would say thats a last resort. You will lose everything you have saved in your hard drive.

sounds like a viru to me..get malwarebytes anti malware, run it and it should solve problem ... on quick scan, fast and its free...go to download.com..and try using google chrome browser instead of explorer...its free on same site...safer, faster browser.. hope this helps..thanks for voting!!