See this link for info re downloading the ISO for Windows 7 from Digital River:
MY COMPUTER: Toshiba L650 64 Bit Windows 7.
BACKGROUND: I had a virus i could not get rid of (iexplorer virus) so i downloaded a bunch programs to get rid of it (I've had my credit card stolen twice in past 4 months and think this is the reason). In the process of deleting stuff which I probably shouldn't have been deleting, an error came up saying I was having hard drive problems. I think at this point i deleted my boot up system or something important. I turned off my computer 30 mins later and at this point was never able to turn it back on and get into the desktop.
I wanted a factory reset so I tried everything, starting up with F8 and F12 for "repair my computer" it wasnt there, The hold down 0 key trick, didnt work. I spent hours looking up ways, to no avail.
WHAT I DID: I figured that my hard drive is trash. So i went on newegg (after doing tons of research) and bought a new 500GB 7200rpm hard drive to replace my 500GB 5400RPM harddrive.
( http://www.newegg.com/Product/Product.aspx?Item=N82E16822136856 )
I replaced the old hard drive with this new one but am not sure what to do now. I keep hearing I need a new media disk, or i need to re-install windows now. Is a media disk the same thing as a boot disk? Will this solve my problem? I would REALLY rather not pay $90 for windows 7 when I already had it. I'm looking for the cheapest solution that will work.
I appreciate any help I can get! Thank you very much!