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Timing Problem


paulb

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I am building a system with an Asus P5GD2 motherboard. This is the 775 socket and the 915 chipset. I have one module of DDR2 PC2 4200 1GB. I am running a Prescott 330 3.0GHz. On boot the POST message says "system failure due to CPU overclocking." It then reboots. Sometimes if i turn the PSU off for a couple seconds i can get it to the bios. After saving settings i have been able to get to the windows spash screen but then the computer reboots. The post message then is the same and it reboots or gives a bad bios check sum and looks for the disk drive. The Asus tech told me to call you guys and ask for the correct timings for the ram so i could enter them in to the bios. Your tech support teem is home for the week end...

 

Anyone got any ideas?

 

I have flashed the bios on the board from 1001 to the latest

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I would reset or clear the bios and then turn it on and enter the bios and load setup defaults and then set the timings manually to the tested settings.

CPU External Frequency: Manually set to 200MHz

DDR2 SDRAM Clock: Manually set to 533MHz

DRAM Timing Selectable: Auto Yields the following timings

SDRAM CAS Latency: 4T

SDRAM RAS to CAS Delay (tRCD): 4T

SDRAM Row Precharge (tRP): 4T

SDRAM Active to Precharge Delay (tRAS): 12T

DDR2 SDRAM Voltage: 1.9

NB Voltage 1.9 Volts (On Abit AA8 Only)

All other settings are motherboard defaults.

Maximum DDR2 recommended VDIMM: 2.1 Volts

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