OC problem, please help~

[samnr33]

heres my spec:

i7-930

X58A-UD5

HD 5970

Xi-Fi Fatality

Kingston Hyper-X 1600 ddr3 6G

Corsair TX-850

2 x HDD

1 x DVD RW

7 x Case fans

3 x UV lights

Coolmaster Cosmos S

 

i was doing ok before with 3.8GHZ, but now after i've added some more fans and UV tube, i cant oc anymore~ everytime when i try to oc, i got boot failure says "boot failure because of cpu overclock or change of voltage", i really wonder why~ coz adding a few more stuff like that shouldnt affect my psu, since its a 850w psu, it should be more than enough~ can any1 pls give me some advice?

 

heres my oc details:

cpu clock 19x

BCLK 200

Qpi ratio x36

Qpi link speed 7200

Vcore 1.23

Dram 1.6

 

Thanks in advance