Posted December 26, 201113 yr I got a trojan on my computer today and halfway through running Microsoft Security Essentials (which I have used on this pc since I've owned it) in safe mode it started saying my version of windows is not valid. I have no idea where to go from here, I have tried resolving it through the website but all it wants you to do is get Windows 7 which I don't want. Continue reading...
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