Changing multiplier stops PC from booting properly

[Castiel789]

After not having my CPU overclocked for a while (i7 3820 @3.6GHz) I decided to overclock it again after getting my new GPU, a GTX 980Ti, because I didn't want it to be bottlenecked in any way.

So I increased my CPU clock ratio from 36 to it's highest, 43, putting me at 4.3GHz, which works perfectly fine, though when I decided to try to go one better and increase the base clock multiplier to 1.25x, then drop the CPU ratio down to get I think it was 4.63GHz total? My computer decided to not boot properly, I made sure to drop the RAM multiplier down to keep it at the same MHz, though it just restarts about twice then gives me an error in bios, changing the clock back to it's default.

What am I doing wrong here? Or is it just not possible to OC it higher?

 

[Sleetz]

Your computer is telling you not to go any higher.

 

[Benjiwenji]

Have you been stress testing every time you change a variable in BIOS? If so, and you should have, then reset the variables to the last known stable state and start over from there.

What is your PSU?

 

[Castiel789]

I only change the 2 variables. I have a Corsair GS800 Power Supply btw.
When I overclock, I change it from 4.3GHz to 4.625GHz by changing:

CPU Clock Ratio 4.3 > 3.7
Base Clock Multiplier 1.00x > 1.25x

I only change those 2 things, and the first needs to be changed in order for me to change the second to not put the GHz too high.
So I'm not sure what to do.

Thanks for the replies

 

[Benjiwenji]

There is the problem, you are only supposed to change one variable at the one and run stability test each time. i.e. overclock 100mhz at the time and run 20mins of Prime95 Small FFTs until you can no long have a stable system without adding voltage. You will then add .01v of voltage a one time and run 20mins of Small FFTs and so on.

It is a long process, you can't be impatience or skip ahead until you are very familiar with the practice.