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DX58SO will not boot into Windows after memory upgrade

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July 8, 2011 12:32:51 AM

I've been running my system with 3x2GB of ram http://www.newegg.com/Product/Product.aspx?Item=N82E168... . The motherboard has 4 slots for ram 2 are independent channels and the other 2 are part of the same channel. So i decided to get a 4GB ram upgrade and bought this http://www.newegg.com/Product/Product.aspx?Item=N82E168... . I haven't been able to find a successful configuration using all 10 Gigs of RAM. I seems any time I try to occupy the second slot of the third channel it has a POST test failure. Right now I have the 4GB in the fist channel 2GB in the second and 1 2GB in the third, but if I try to put the last 2GBs in the third I can't boot into Windows. Even though everything seems fine in the BIOS.
a c 105 } Memory
a c 245 V Motherboard
July 8, 2011 12:57:30 AM

You have mismatched ram.
They are of different voltages(1.65 and 1.5) and latencies.
Some motherboards are very sensitive to this. Reread your mobo manual to see what it can handle.

All ram must run at the same voltage. You may be able to make it work by changing the voltage in the bios. With more sticks, it may take more voltage.

I think you would be better off to just get a 3 x 4gb kit.
Check the ram vendor's configurator to verify that anything you buy is compatible with your motherboard.
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July 8, 2011 1:05:55 AM

OK, thanks for the reply. Do you think I might have a bad DIMM?
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a c 105 } Memory
a c 245 V Motherboard
July 8, 2011 2:57:43 AM

uromastix87 said:
OK, thanks for the reply. Do you think I might have a bad DIMM?


No, I suspect they are all OK.

The gold standard for testing ram is memtest86+. You should be able to run it for at least a full pass without ANY errors.
Run it for each individual stick if you get an error with all of them.
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