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)
1000
0010
Non-working combinations:
1234 (channel numbers)
0100
0001
1100
0011
1010
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.
Best Answer
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