Asus M4A758T-M Problem with 2GBx4 RAM

ajith339

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Dec 31, 2011
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Hi,
Recently i upgraded my PC from 4gb to 8gb of RAM and it is not starting up with all 4 sticks. My settings are as follows.

RAM- 2GBx4 Gskill F3-10666CL8D DDR3-1333 PC3-10666 CL 8-8-8-24 1.5v
CPU- AMD Athlon II X2 250
OS- Win7 64bit
Memory clock set mannually to 8-8-8-24 and Voltage to 1.5 Frequency - 667MHz
CPU-NB Frequency - 2000

PC works fine with 2 sticks in memory slots A1 and A2. But it was working fine for 2 days with 4 sticks (8gb) for 2 days and it crashed. I reset the bios and it detected all 8gb once more, but again crashed.

Now pc wont start at all with all 4 sticks in slots. i did the following.

tested all 4 sticks individually in A1 channel- OK
Tested Pair 1 in A1 & A2- OK
Tested pair 2 in A1 &A2- OK
Tested Pair 1 in B1 & B2- failed
Tested pair 2 in B1 & B2- failed

Can anyone suggest me the correct settings or is it a Motherboard problem?

Thanks.

RAM in Unganged mode