i5-2500K overclock help

[Noob]

hey guys, looking for some help!

Yesterday I started following the Gigabyte overclocking video from this website, followed it step by step, for around 30 minutes. I got to the first overclock, and lost all video. then had to reset the bios, video came back but windows wasn't starting up, it was going into start up repair, as always that didn't fix anything. so I had to do a fresh install, which is all set up now.
after installing all drivers I take a look on CPU-Z and the voltage on the CPU is jumping from around 0.970 to 1.200, and core speed is jumping from 1500MHz to 3300MHz, this wasn't happening before I reset the bios.

I'm not really sure why I lost video or the ssd crashed.
any help would be amazing. thanks.
I would love to get this rig up to 4.00GHz

running on...
Intel i5-2500K
not sure what the cooler is called but it's good enough for overclocking
Z77-D3H Mobo
8gb DDR3. 1600MHz (i think)
Radeon HD 6950 2gb
OCZ 120GB SSD with AHCI enabled in the bios.

[cooperman]

When you reset the bios i am gessing all the power saving options have been enabled.

[Noob]

Originally Posted by cooperman

When you reset the bios i am gessing all the power saving options have been enabled.

thanks for the reply, thought it might be the power saving options.
I've been looking at my RAM and the speed is 800MHz, when following the instructions of the overclocking video in the Bios i set it to 1333MHz, could this be the problem for video loss?