Computer is sick! Please help!

Hello, im not much of a tech person, but i know enough to (usually) not get any viruses. Recently i was downloading some music, and avg popped up, and gave a bunch of error messages saying that trojans and spyware was detected, so i had it remove them, and move them to the vault. Then a couple minutes later, a program came up that i had never heard of: "Win 7 Security", and it gave me a bunch of warnings about viruses infecting my computer. I did a quick google search for it and came across this: hxxp://www.malwarehelp.org/win-7-security-removal-2010.html I followed the steps and it seemed to work fine. But heres the problem, when im using the main account, any program i attempt to launch, it asks me which program i would like to open it with, even if its a program in itself. But on my other account, i can access all of these programs just fine.Will i have to delete the main account, and transfer all of the files i have, or is there some sort of fix. Win 7 security is no where to be seen anymore (that i know of) but it is really frustrating. Thanks to anyone willing to help, i tried using the search feature on the forum, and no results came up, so im sorry if this has already been answered/

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