Author: fmofmofmo
Subject: ASrock Z75 Pro3 - Strange Memory Problem
Posted: 13 Feb 2016 at 10:59pm
Did you buy the four sticks of Patriot memory together as one kit of four? Or are they two kits of two sticks, or something else? Two kit of 2 sticks
Subject: ASrock Z75 Pro3 - Strange Memory Problem
Posted: 13 Feb 2016 at 10:59pm
Did you buy the four sticks of Patriot memory together as one kit of four? Or are they two kits of two sticks, or something else? Two kit of 2 sticks
You did not say, but do two stick work in slots A2 and B2? Yes, with 4 stick inserted, only A2 and B2 are detected by the BIOS. With only two sticks inserted in A1 and B1, everything is OK, so these memory slot are not damaged.
Every time you add or remove memory sticks, you must clear the CMOS/BIOS before you start the PC again Try but same result
What is the exact model name and number of your memory? Patriot 1866 (PV38G186C0K). I try with two other memory stick Corsair 1600Mhz (CMX8GX3M2A1600C9) and ADATA 1699Nhz (AX3U1600W4G9-DB) with same result.
The highest speed of your memory, 1866, is normally not set automatically in the BIOS In the BIOS, I can only select speed of 1066 and 1333, nothing else.
Does this memory have an XMP profile? It seems like it probably does. Did you ever select the XMP profile in the BIOS? Yes, Patriot stick have XMP 1.3 Profil (I can see this in System Browser) but I don't have XMP option in BIOS. This may happen if the BIOS think the memory have not XMP profil. Same with Corsair and ADATA memery stick.
Have you looked at the settings for Memory speed, memory voltage, and XMP profile in the BIOS? I can only select 1066 and 1333 in memory speed. I try to set memory voltage to 1.510 (maybe not enough) and I don't have any XMP option.
Does your BIOS have options for VCCSA and VCCIO? Only VCCSA
How much memory does Windows tell you is in the PC when you check that? 8GB same as BIOS
