I'm very glad to have stumbled across this forum! I've recently purchased a new ASUS computer (N61V I think), it came with Windows 7 Home, however for school the techies will only work with Windows 7 Professional, so thus, I cannot use it at the moment. I went through start, and went to "Windows Anytime Upgrade", purchased the Professional upgrade, confirmed, etc, etc. But for some reason my screen has gone black (I'm using another comp!) and the lights are flashing on and off. This has been happening for 2 hours now, and I'm not sure what to do. It's got a 500GB hard drive (around 470gb left) and I'm not sure why it's having such problems. Very strong internet connection - plugged in- and has been on charging. Help very appreciated, Thanks!