If it's a trial, then you have to buy the one you are using now, then you would be able to upgrade. You can upgrade from windows 7 to windows 8 for $66 at newegg.com. FYI, after the trial ends, see what it cost to keep. If it's says $199(which is retail, home edition 64bit), don't buy. You can get a OEM copy for $99(newegg.com also). You just have to know how to install windows and all drivers.