I have microsoft vista operating system which consumes lots of memory and CPU. So I am trying to do a downgrade to windows 95 because it uses lightest memory and lightest resources out of all OS. Firstly when I purchased windows 95 from amazon, it was several floppy disks. I had no idea what the floppy disks were for since there was not even any floppy drive. I then went to an IT company who offered service of converting floppy to CD for 200 dollars. So I got the CD from the floppy. However the CD do not seem to work at all. Everything is getting messed up. Computer keeps crashing whenever i install the setup CD. Either there is no reaction, it freezes or 'unrecognized program' keep appearing. So then what I did is I deleted the entire hard drive including the vista OS too. And on the blank HD, i inserted the win 95 setup CD, and again nothing happened and everything seemed to crash. I think the CD has viruses in it. I contacted the IT company who made CD telling them of the trouble I had. They said they can create virtual computer windows 95 for me and that fee will be 400 dollars for it. What to do in this situation? I am using another computer and having deleted vista already on the original computer, i cannot even re-install vista since I no more have the product key and have no vista CD.