Unusual RAM Problem

[Sickboy]

ECS K7S5A Motherboard (2 SDRAM DIMMS + 2 DDR RAM DIMMS).
I've just built a system based on this mobo but am having a problem with RAM. I've installed 256Mb PC133 in a single module in the first SDRAM slot and the PC locks up after a few minutes operation (or sometimes during boot). If I install a stick of DDR in the appropriate slot it works fine, in fact, if I use the original stick in the second slot it also works fine - is it possible that the first slot is faulty and, if so, why does it work for a while? Never come across that before.

[Peter M]

Update to the latest BIOS, then set conservative timings, select "RAM Termination" Disabled for SDRAM and Enabled for DDR.

Then run memtest86 (from www.memtest86.com) to see whether you got a flaky DIMM there.

regards, Peter

[grimfandango]

Check your motherboard guide first!

You should have an long set on jumpers to select sdr or ddr ram!

then select the right voltage also by jumpers!....





:t

[Peter M]

Not on this one. K7S5A has the termination switchable by BIOS software, and socket voltages for DDR and SDRAM are also preset without the use of jumpers.

[dwood]

the k7s5a series has some boards defective with a bad memory controller mine being one all ram put in there goes bad so if you get too many memory errors look to return it.