Hi.The was previously an entry with the subject:What "new" AMD x64 CPU's does concern newly released hotfix (KB9494559)I was totally off here - this hotfixis about VIA CPU - and not AMD. Sorry :)

Hi, Do you actually talk about this Microsoft KB article? The new 64-bit CPU from VIA Technologies is not recognized on computers that are running Windows XP or later operating systems http://support.microsoft.com/default.aspx?scid=kb;EN-US;949459David Shen - MSFT