Well I have vista 32 bit and 64 bit; I have a feeling I may downgrade to 32 bit. My Videocard I cannot get to work; nor can I get the bluetooth/ wireless to work? I'm currently using Wired internet and the standard VGA adapter. I tried downloading that driver from (laptopvideo2go) but neither one worked.. But I noticed off the bat that with 4gb of ram that vista X64 is amazingly stable.