i have intel inside pentium 4 processor but i wat to overclock it and when it goes to certain speed it turns off and i heard tha is because do not have enough voltage and i wonder if someone can help me
Probably more like your temps are to high. More so if you've been bumping the voltage up. Try reading some OCing guide to see what you should be doing.
The bigger problem is if he thinks upping the voltage will get him where he wants to go. Up it high enough and your chip is fried. You have to understand what those settings are for in the bios, or you'll lose your chip/motherboard.