I bought an HP laptop, with windows vista, a while back ( Fall2009) and since then I upgraded it ( using a cracked copy ) to windows7. While I was running windows 7, i caught a malware virus( blue screen of death) and had to switch to Linux( ubuntu). Since then I have been using ubuntu and recently, through the school's engineering department, I obtained another copy of windows7, but this one was cracked as well. So I was wondering if it is possible for me to reset my laptop back to windows vista (with a legit copy and not a crack one)?
Edit : Specs for my laptop
Processor: AMD Turion Dual-Core RM-5 2.20Ghz
RAM : 3.00GB (2.75 GB Usable)
System type : 32-Bit Operating system