will xp 64 bit run perectly on a hp dv6000 that came with 64 bit vista?

Not likely.
There were a lot of changes so it's really hard to say.

I personally consider Vista now to be better than XP overall so I don't see the point in switching. I'm not sure where you are getting the copy of XP, but if you are buying it would make the most sense to just get Windows 8 64-bit OEM for $90 (and add Start8 for $5 if desired to avoid the new interface).
 

vstar950

Honorable
Jun 5, 2014
15
0
10,510
I need a xp computer and this will be it if i get the drivers working. Vista and 8 are an abortion. I need this for old programs that i have. thanks all for the replies. I will try my luck soon.
 
Windows 8 is actually incredible. As I said, you can completely bypass the new interface.

Since XP 64-bit drivers weren't that common for many components, AND your computer had Vista on it you may have difficulties with some drivers. Conversely, Windows 8.1 64-bit is so new it likely has most or all of the drivers you need right on the Install disc.

On my dad's Vista laptop I did a fresh install of Windows 8, and the ONLY driver it didn't install was for the card reader (I tried the Vista driver from the laptop support site and it worked). I did update the NVidia graphics driver to a newer one as per normal. His laptop booted up in about 30 seconds on the 5400RPM hard drive (six-year old laptop) and has been rock solid and smooth even with only 2GB of System RAM.

I then got Start8 for $5 to bring back the Start Menu, disable the Charms Bar and then I changed the settings to boot directly to the desktop so the interface is basically EXACTLY like Windows 7's.

Suit yourself of course, but unless you have programs that won't run on Windows 8.1 64-bit (even after applying XP SP3 compatibility mode for the program) I see no point in NOT getting Windows 8 as it's just far better.

*You can also look up the COMPATIBILITY of your software:
http://www.microsoft.com/en-ca/windows/compatibility/CompatCenter/Home?Language=en-CA