I bought a laptop from HP and I wanted to do a clean install of Windows 7 in order to get rid of all the bloatware. There's an excellent guide on doing this at http://forum.notebookreview.com/hp-compaq/432564-hp-laptop-out-box-guide-2-0-windows-7-a.html. However, I wanted to know whether I can use an OEM Windows 7 disc that I bought when I built a desktop PC, instead of using the Digital River download from step 1.1 in the link I provided. Does it matter that it's an OEM disc? I figured it shouldn't as long as I backup the laptop's OEM activation using ABR utility.