Yes jVIDIA, the 266Mhz strap is the one i'm using, the only "stable" with high FSB's ... to achieve 500x8 with 1200Mhz on the memory i tried the 333Mhz strap upping the voltages of the NB, PLL and FSB as well as the RAM but didn't worked, also tried with the clock skew's but nothing ... and when i try the 400Mhz strap with my 445x9 to achieve 1186Mhz on memory also fails, i'll give a try disabling all the Advance CPU Settings as you say and i'll check if helps.

Thank you!

ps: I was the one having problems trying to update the BIOS from 0708 to 0901 on the P5Q Pro (from Ezflash and AFUDOS too, even with flags) ... but i finally solved it using an old version of AFUDOS, the 2.29 instead of the 2.36 the ASUS DVD includes, can be found here: http://www.fileden.com/files/2006/8/...FUDOS229ES.zip ... i placed it into an USB stick formatted as a Win98 boot diskette and flashed using: AFUDOS.EXE /iROMFILE.ROM /pbnc /n