How can i upgrade my windows OS?

I have plan to buy a laptop? for that which OS is best windows 7 or Windows 8?

Can windows melinium upgrade to windows xp professional with this cd a guy gave me

hii... I just want to know if a normal HP lap top can have two Operating systems installed on it... as in have windows and ma...

Have you upgraded to Windows Vista? I did, but my video card is too crappy to even do anything cool with it. If you haven’t u...

My computer runs XP right now, a lot of my friends have windows 7 on their laptops, but my dad's giving me the option to upgr...

After having windows 7 cannot find favotites

my mom is upgrading the laptop and I'm kind of worried bc I could've sworn that people said that you should stay with vista.

can I get an uprade for my lg fusic lx550v12 ???

I also hate who I have to spend a day tweaking the OS before I can even use windows 7 for my work

Ok so I want to upgrade my windows 98 yea I know lame and I don't really have any money because all the money I'm saving up i...