It is a OEM Version from HP

I actually ordered a tx1000z and it has home premium 32 bit on it, but I
have 4GB of memory and I need a 64 bit to see it all

"Nick" wrote:

I have a 32 bit version of windows vista Home. Is there any way I can get a
free copy of 64 bit vista home or an upgrade disk or anything, I want to go
out and buy windows Ultimate 64 bit but is that the only version that is 64
bit?