You might have just installed it beside your Vista installation. Just put in a Linux Live-cd and use GParted (sometimes called Partition Manager in the menus) and format the drive to something Windows can't install to (ie: ext2, ext3, ext4), and then restart. When you run the Win7 installer it will be forced to format the drive (NTFS).
Well I ran the command prompt to see if there was a remains of Windows Vista and there wasn't. It is just the folders but I can't find them anywhere. FOUND IT! The computer took it to itself to back up all my files in a folder called Windows.old. I am looking at how much memory was in it and it is reaching 70gB as I type....
Oh and MrGregoryMahony, are you fucken gay? Also, only computer illiterate people would mess up a computer, I did what I was supposed to and it did not work. I formatted it and when I installed the Windows 7 OS I choose to remove it, but the files were retained somehow. Also I do not sit around and scratch my balls all day, I have your mother for that, you know just like you have your boyfriend.
DaisyMontana, I got arid of Vista because it was garbage and I did not like it, and it was slow as shit. I can tell you right now it is not my computer being slow, I have 2 gigz of Ram and I have completely revamped my computer for gaming and it does not have many games that can make it run slow.