Hello, I don't know if this is the right place to ask for help or not, but I hope someone can help me. =/ I have Windows Vista Home Premium 32-bit and more times then not, I get this notice saying an unauthorized change has happened to Windows" or something along the lines. Then it gives me the option to go online or 'close' which brings me back to login screen, and I have to keep trying to restart until Windows starts up normally. If I go online, it brings me to microsoft.com/genuine/ and it said my version of Windows Vista wasn't genuine. I'm on a Presario V6000 and it used to have Windows XP but we installed Vista on it and I'm pretty sure it's genuine. On the validating if it's genuine thing, after saying it wasn't, it gave me these instructions that said to go to Command Prompt and to type "net start slsvc" and to wait for it to say 'The Software Liscensing service has started'. Mine says "The Software Licensing service could not be started. A system error has occured. System error 54273 has occured. The system cannot find message text for message number 0xd401 in the message file for BASE". Also, I have lately been getting other pop-ups like 'Optional update delivery not working; You may be a victim of software counterfeiting." and stuff about by Windows Aero not being genuine, though I've been using it for well over 6 months. Also, my Control Panel and everything in it has simply... disappeared. I would change my Aero to normal kind (if it's there) but I can't even get into my Control Panel or even think it's there because when I click on it, a explorer comes up with nothing and closes itself quickly. Also searching for anything that would usually be in the Control Panel in the search start thing (like Users, Display, Mouse, the norm) aren't in the search results. It feels horrible. Windows Update will also not open, though other Windows stuff will, like Windows Mail. I also tried watching some movies online and though there were a massive amount of pop-ups, I don't believe that's the problem as I do that on other computers. =/ Will anyone please help me? I'd really appreciate it.