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I have four new (to me) sticks of Kingston 1Gb 400Mhz DDR2. Three of them boot fine individually in slots 1 or 3, but not in slots 2 or 4. The fourth does not boot in any slot.

The three working ones do not boot in any combinations of slots.

Working combinations:

1234 (channel numbers)

Non-working combinations:

1234 (channel numbers)
1111 (naturally, as one stick seems duff)

However, with my old memory, a single 1Gb 667Mhz DIMM, the computer will boot no matter which channel I put the DIMM in. Any combinations of new and old also fail to boot.

Motherboard: Gigabyte GA-M52L-S3P gigabyte page. Page 15 of the manual (pdf) says that both DS/SS are useable in the usual 1&2 or 3&4 pairs, or in all four slots.

My question is similar to Can't get memory sticks to work together, except that even combinations of known-good DIMMs do not work, and similar to Memory works fine separately, but not together, except that I can't boot the faulty stick to change the BIOS settings for it.

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Of course, I didn't explicitly ask a question, but I would like to know if anyone can diagnose this issue. – nimasmi Jul 10 '12 at 17:31
have u updated your bios? – feco Jul 10 '12 at 17:35
No. Still F1. I'll try that. – nimasmi Jul 10 '12 at 22:22

Motherboard issue. If the RAM is known working (i.e. all RAM tests OK in slot 1, 1 at a time), then it's the motherboard

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The most likely explanation is that some of the motherboard timing or voltage parameters in the BIOS setup were altered from their defaults to optimize performance with the old RAM. Prior to changing RAM hardware, those settings should be returned to their defaults.

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