Vmare et le 64 bit

Bonjour, j'ai un souci sur vmare un message me préviens que le 64 bit n'est toléré.
Voici le message :

"You have configured this virtual machine to use a 64-bit guest operating system.
However, 64 bit operation is not possible. This host is VT-capable, but VT is disabled.
this is usually because VT has been disabled in the BIOS/firmware settings or the host has not been power-cycled since changing this settings. Please :
(1) verify that the bios/firmware settings enable VT and disable 'trusted execution'
(2) power-cycle the host, if either of these BIOS/firmware settings have been changed.
(3) power-cycle the host, if you have not done so since insstalling vmare worksation
(4) update the hot's BIOS/firmware to the latest version
for more detailled information see http://vmware.com/info?id=152

Continue without 64-bit support ?"

Même en essayant de traduire le message, et en allant sur le site j'ai pas trouvé de solution vous êtes mon seul espoir !
Merci d'avance pour l'aide futur fourni :)