Hello. I am working on an Acer Aspire 4750G which I downgraded to 150GB only since I don't need much space. (that's the only thing I changed). I recently did a fresh install of Windows 7 Ultimate x64 on my 2GB laptop(2GB is the minimum for win7 x64) and after the screen "Preparing for first time use", and then the user and time setup boxes, it says: "Welcome" and then "Preparing your desktop..." then, "Shutting Down" After the shutdown, it just keeps on restarting, and it doesn't even show the "Starting Windows" boot screen. I checked the boot sequence and I put the HDD on first, but still nothing. I can't even access the option to enter safe mode, safe mode with networking.. etc. **I also tried the 32bit of win7 ultimate, outcome is the same.