I have a PCChips 810L v7.1a M/B which according to the manual will support an FSB of 200/266 mhz. When I set my AMI BIOS DRAM to 133 to run my 1700XP (FSB 266) after about 5 minutes my system completely freezes. All I can do is reset. I've tried new PC133 RAM which is fine and my CPU temp is about 33C, I even tried formatting and reinstalling windows. I have no choice but to set my CPU to run at 1100 in order for my system to be stable. I've run SiSoftware Sandra which tells me my max FSB is 200mhz, when I set my BIOS DRAM to 133mhz SISoftware Sandra warns me that I am overclocking my FSB and my system will not be stable. I've checked the PCChips website and my BIOS version will run Athlons up to 2600. The AMI BIOS does not, as far as I can tell, allow you change anything other than the DRAM or CPU speed and my M/B does not have any jumps to change. Is my M/B broke or I am missing something obvious?

There are two settings: CPU Frequency (100/133) DRAM Frequency (100/133) Setting CPU Frequency to 133 sets the FSB to 266. Setting the DRAM Frequency to 133 sets your RAM to 133MHz. Have you set both? From PCChips FAQ: MB810LR problems with 133/133MHZ Question Set memory and cpu speed to 133 will sometime hang in the bios, just before loading XP or running diagnostic software (PcCheck). Answer Please download latest BIOS for fixing the issue.

Thanks for the reply, but in AMI BIOS the only setting that can be changed is the DRAM. You can change the CPU speed the only choices I get are either 1100 DRAM setting of either 100 or 133 or 1700 DRAM settimg automatically defaults to 133. Also may seem daft but how do you flash the BIOS if you sre using windows XP, I thought you needed a DOS enviroment. When I load the floppy at start up all I get was that it could not find a boot record on the floppy?