BSOD because of RAM

I have a computer with following specifications:
MSI A8N Neo4
Athlon 3200+
3 GB RAM - 2x1GB CORSAIR VS1GB400C3 and 2x512MB GEIL GE1GB3200 BHDC

The problem is in BSOD for which I assume that they come from RAM, because minidump files point to random causes and NTOSKRNL is the one who always crashes.

I tested ram thoroughly with memtest86+, windows memory diagnostics, hci memtest and gold memory pro. All programs show up errors when all modules of RAM are inserted. Everything is fine when only GEIL RAM is inserted, so obviously CORSAIR causes problems. Memtest86+ once found an error with both sticks, but not when only one present. Same thing goes for HCI memtest. Gold memory pro finds problems with single module and when both modules are inserted at once (but it happened now twice that it didn't detect any errors after BIOS reset, so that's very strange).

Anyway, I tried with several different settings for RAM in BIOS, but without any outcome difference. Perhaps I didn't hit the proper settings, so I'm asking you to help me out with any useful ideas.

Here is BIOS menu for RAM: http://shrani.si/f/C/Sa/2iMVIO8s/img3443.jpg

CPU-z with problematic CORSAIR RAM: http://shrani.si/f/3e/wx/2NdeLukR/cpu-z.jpg

Voltage was set on 2.65 V all the time, I changed it now to 2.50 and again, no difference.

Layback Bear said:

I know of no ram that voltage is set that high. The highest factory specs I have ever seen is 1.65v. Remove the ram and inspect, it should have on it the max. voltage for that stick.

I do: Corsair Memory

Layback Bear said:

I know of no ram that voltage is set that high. The highest factory specs I have ever seen is 1.65v. Remove the ram and inspect, it should have on it the max. voltage for that stick.

This is an old nForce 4 Ultra (AMD) motherboard, using 184 pin DDR memory. (Not DDR2, or DDR3.) I suppose that it's really a K8N Neo 4.

I didn't realize that it is possible to install Win7 on that chipset.