Help with CPU overclock?!

[Computer__GUY]

I am fairly new to overclocking and a friend has asked me to overclock his computer. The CPU he is using is pretty old and is an Intel Core 2 Duo e8400 3GHz. He has got an Arctic Cooling Freezer 7 for the heat sink. I tried to overclock the computer to 4GHz yesterday but after saving the changes I was getting no signal onto the monitor even though the PC was still powered on so I had to reset the BIOS by reseting the CMOS battery. I am unable to change the multiplier which is set to 8x by default so I turned up the FSB to 500MHz to get me to the 4GHz overclock. The memory which is at 800MHz by default went up as a result of the CPU overclock to 1001MHz. I believe that this may have caused the error. I have heard something about RAM timings but not too sure what it means.

Please can someone help me with this overclock and indicate to me how to go about doing it without getting the no display error which I got yesterday? Thanks in advance.

 

[Rocking Durgesh]

First Download thecpu stability testing software prime95 from here :http://www.ocaholic.ch/modules/wfdownloads/singlefile.php?cid=101&lid=758
Overclocking is a step by Step method. Don't overclock by any software because overclocking is not the thing that can be done by software. First set the XMP memory profile enabled to set your RAM correctly. Then Go in BIOS and find the CPU clock ratio, this is the multiplier setting. It starts at a multi of A (some no.)x 100(BCLK)(normal factory settings) to give you A Gigahertz. So up it .5 at a time and boot to os and test with P95 for stability and monitor your temps. Do this for approximately 20 minutes. If it passes raise the multi another .5 and try again. You'll get to a point where either P95 won't pass or your temp will gone so high. If the temps gone high you'll have to stop and work on cooling. If P95 fails then go to the Advanced voltage section in bios and add some volts to the CPU VCore . Stay in offset and just add a bit by tapping on the "+" key and test again.
If your temp goes really high them you have to stop amd keep it to cooling. A step will arrive when your P95 never pass or temp immediately go high. Them youJane to stop overclocking and you get your extreme speed of your processor. ....