Overclock amd 2 5000 to phenom win7 failure

[Guest]

motherboard n68c-s/ ucc amd x2 5000 new build . when i un lock cpu shows up in bios as phenom x 4 fx ect
g to start win start page then re starts ?? clock back to amd x 2 everthin fine ,missing somethin in bios or hardware ? any ideas ?

 

[videl]

idk could be you don't have enough voltage to run at all 4 cores...