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Hi Ram guy,

I returned a stick of CMX512-2700C2 to Corsair that would not boot in two systems with different mb's, They replaced it no worries, the problem I now have with with the returned ram is the system now starts to boot (post beep ok) but then the computers (checked in 2 systems again) both give the same error message:- windows could not start because the following file is missing or corrupt: system32\drivers\ntfs.sys. other ram still works ok.

Any ideas on what to do? my RMA was R59478

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  • Corsair Employees
The problem that you are having is probably coming somewhere else. Can you tell me the exact model# of your memory module and the make and model of MB you have along with the CPU speed and it’s FSB as well? In addition, please tell me if you have the latest BIOS installed on your system and the bios settings you have set for both CPU and memory and any performance settings that you may have set?
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The Memory module is: CMX512-2700C2, XMS2702v1.2 0323129-16

XMS2700 512MB 333MHz CL2.

CPU XP2500+ Barton

MB Asus AN8X2.0 Deluxe ACPI Bios Rev 1006

166 MHz External clock

2000MHz current speed

Memory freqency 100%

resulting freqency 166MHz

memory timings Optimal

sdram active precharge delay 7

sdram Ras to Cas delay 3

sdram cas latency 2.5T


There is bios update 1008 for Support AMD Sempron CPU (not installed)

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  • Corsair Employees

Please make sure that you have the latest BIOS for your MB and load Setup/optimized default settings, and try the following BIOS settings;


CPU Freq: 166 MHz (333 FSB)

System Performance: User Define

Memory Frequency: 100%

Resulting Frequency: 166 MHz (333 FSB)

Memory Timing: User Define

SDRAM CAS Latency: 2.5T

SDRAM RAS to CAS Delay (tRCD): 3T

SDRAM Row Precharge (tRP): 3T

SDRAM Active to Precharge Delay (tRAS): 6T

DDR Reference Voltage: 2.7 Volts

AGP Voltage: Default *unless you have ATI 9200 or 9600 then 1.6 Volts suggested!*

All other settings are motherboards defaults

Then please test them one at a time (if x2 modules) with http://www.memtest.org and let’s make sure it's not some other issue! I would run the test for at least 2-3 passes to be sure!

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