hi there ppl im trying to over clock my comp but it keeps crashing on me i hnow it can do it as my bios as function to let me do it in either auto manual or adaptive i tried all but last night it failed to boot when i done it to 3% i had to cmos it my mobo is a asus a8v deluxe my power is plenty i have a thermatake purepower 680watt so there no prob with power on the rails i have a water cooler so maxing it is not a prob either so what could be the prob please help me pleeeeaaaasseeee

You had the Asus A8V motherboard, so it has a VIA KTxxx chipset in it. Those chipset may not have a PCI-E/AGP/PCI lock at 100/66/33. So to overclock properly, lock ur PCI-E/AGP/PCI clock at default, and set RAM to 200Mhz then slowly raise the external frequency of the CPU from 200Mhz up by 5Mhz slowly to see which point is unstable. When you raising the cpu external frequency, make sure you set ur HTT to 4x or 3x so it will not be disturbed (i.e 250x5x2(HTT x2) = 2500 > 2000 = problem, older a64 has 1600HTT)... Another thing you can do would be to raise the vcore of the CPU for more stability, but remember not go to over 10% of the orginial vcore... TMP-Man Asus P5P800-SE P4 506 2.66Ghz @ 4100Mhz 1.525v Thermaltake CL2042 w/ 2000RPM FAN 1024MB DC Corsair DDR400 40GB 5400RPM/120GB 7200RPM HD 128MB Radoen 9500 mod 9700 @ 360/585

thanx man much appreacited thanx will give it a bash and see what happens ta

right ive put my external to 215mhz thats its highest i can set it the HTT is set at 400 i cant find the ram setting it not got 200mhz it only got clk how do i alter the vcore settings so far i got my comp upto 2580 from 2406 so it working slowly and my temp is still sitting at a cool 33oc so all good so far so if you can help me with the rest please do thanx