fx9590 on an 990fx ud5

[jpm2901]

Hi all, just joined.
unfortunately its because i have issues.Im running an fx9590 on an fx990 ud5 motherboard.and while all is well when everything is at stock speeds..my pc crashes every time i touch anything to do with overclocking.cpu multiplier, ram speed, in fact anything.my specs are as below:

fx9590
990fx ud5 mb
16gb ddr3 (1866 clocked with xmp setting) corsair vengeance pro
gtx 770

i have always been pro gigabyte, until now.very disappointed with the limitations of this board.maybe its the fact that my chip will only run with with a beta bios or that the 9590 is already a factory overclocked lower grade processor?.i have no idea.i know my chip will run at 5ghz (even with the thermals and current air cooling).any help greatly appreciated.thanks

[jpm2901]

well, found my solution as no advice given here.revert bios to Fb.chip @ 4ghz but at least it completes the windows assessment and is stable.this chip was never designed to go with this board.having to release a beta bios to recognise it says it all really.time to start saving for that crossfire formula z........