Okay so about three weeks ago when I was surfing the internet my computer locked up and put up a screen telling me I had "inappropriate pornographic paraphernalia" and that if I didn't pay a certain place they would shut down my computer. It even had a picture of Obama on it once. Each time I tried starting up my computer, it looked different but had the same basic concept: Something is wrong with the computer, pay money to fix it. I didn't pay them of course because it's just a virus, and they just want to get money out of me. At the beginning it said that I had 18 hours to pay them, and when I didn't my screen went all white. After that event I was able to restart the computer and log in, but two minutes later it went to white screen, without any kind of pop up. A day later it was down to 30 seconds before the white screen. That was a few days ago, and I've left it alone since then. Now when I turn on the computer, if I boot in safe mode I get to log in still, but then the computer instantly restarts itself. I don't even have time to see the desktop. If I boot in normal mode, I get to log in, but then I can't see any icons on the desktop or the task bar, then after about a minute the screen goes white. Then I restarted it again in normal mode. Now, because of an issue with when I upgraded to Win7, Windows thinks my copy isn't legit (even though I paid for it!) so when it popped up the "would you like to register your copy of windows" thing, I hit the remind me later button, which switched me over to a menu where I chose the log off button. Then it switches back to my desktop while it's logging me out and I can see all of my desktop icons and my menu bar. Then I tried logging in one more time and it showed me the same registration popup and when I clicked remind me later this time it popped up another window saying it's important to register, and when I closed that I got the white screen again. If I just sit there and leave it for about a minute it will always go to the white screen. If I push the power button while it's in white screen I get to briefly see everything while my computer shuts down. While I'm in the state where I can't see any icons or the task bar, clicking and right clicking anywhere do nothing at all. Ctrl-alt-del does nothing. Ctrl-shift-esc does nothing either.