Need help with P5K and Q6600

Greetings to all! I'm a bit newbie in this overcloking and really need some help now. I'm running a P5K with Q6600 @ 3.33ghz at 1.4vcore stable with Thermaltake blueorb, with kingston DDR2 800mhz 5-5-5-15. The problem is when I tried to push the Q6600 to 3.4ghz I kicked the voltage to 1.45v and CPU PLL voltage to 1.7v from auto setting without tampering any other settings ,which proved to be stable in benchmarking.

Now my system wont boot, it just freezes after post messages right before it should start loading windows, (I have 64bit Xp SP3). And tis happened right after I had changed the vcore and CPU PLL. My own conclusion is that I might have broken the mobo or CPU (or both) :S, I mean afterall CPU PLL 1.7v is not really wise thing to do on a Q6600?

My friend said that It's not my CPU that's broken because I manage to get to BIOS and alter the settings there and read voltages and temps from the CPU. Dunno bout this though.

Here's some picks:





Here are picks from the stable settings









Here are picks from the settings that messed up my comp.




So my question is: Is my CPU or mobo broken? Because i'm really confused about the info im getting from my bios. :S

Thanks in advance !

Seems kind of obvious, but you didn't mention that you tried it.

Have you tried clearing the cmos yet, to revert back to stock settings?

You didn't damage the CPU or the MB by only raising the Vcore to 1.45v and the CPU PLL to 1.7v. When you increased the FSB to 380 MHz, the DRAM frequency was also increased from 889 MHz to 913 MHz at the default of 1.9 Vdimm and 5-5-5-15 (all sub-timings on AUTO); this while on a 5:6 divider (333/800 NB strap.) After resetting CMOS like downer suggested, increase the Vcore to 1.45, leave CPU PLL at the default of 1.5 - 1.55v (1.7v CPU PLL is too high), and increase the DIMM voltage to 2.0 - 2.1v (this with an FSB of 380 MHz, for a resulting 3.42 GHz clock.) Leave the four primary timings at 5-5-5-15 (sub-timings on AUTO), increase the FSB Term. Voltage (VTT) by .1v to 1.2v, and lower the vNB to the default of 1.25 - 1.3v (1.55v is way too high w/ an FSB of only 380 MHz.)

Next run Memtest86+ to verify stable RAM timings and voltages (Vcore, Vdimm, and vNB), then try booting into Windows. You might also want to consider loosening tRFC (REF to ACT Delay) from AUTO / 42 to 54, and tRAS (RAS# ACT Time / Precharge Delay) from 15 to 18. Also consider changing to an FSB of 425 MHz x 8 = 3.4 GHz, with a 1:1 divider (333/667 NB strap) for an effective 850 MHz DRAM freq.

+1 redduc900