Hi, After going through many overclocking problems and with the help of this forum. I got alot of my problems fixed. After having some suggestions on how to achieve my goal of 2.4 ghz on an Intel Pentium 4 1.8a on an ASUS P4S533 m/b, I decided to give it a try. I increased the ram voltage and cpu voltage among many other things. After overclocking to 2.4 ghz, my system wouldn't Post. After ruling out my CPU, M/B, RAM, and Video card. I believe I cannot post at my overclocked speed because of my power supply. My PSU, is an Allied 350 watt. I have many components in my system. 4 harddrives, 2 optical drives, 1 case fan, 1 HDD fan, Soundblaster Live card, a PCI Ide controller, and a All In Wonder Radeon 7500. Does anybody know if my power supply is the cause of not being able to post? Do you think a 400 watt power supply would allow me to post?