Did you mean recognize in Cpu-z (uknown) .. Like that some phenom II work fine but alway's uknown in CPU-Z, try again update with bios 5.14
. good luck
Read this : www.cpu-upgrade.com/mb-ASUS/M2N68-LA_(Narra3-GL8E).html
Thanks for the help.
1. There is no bios update available from HP.
2. What I mean is, will the cpu boots up at all?