Windows isn't testing your RAM hard enough to know the actual mistakes.
I have a Thinkpad X31 without CD or floppy drive. I can't boot from CD or floppy or USB stick to run memtest86. I am adding memory to it; what is a good memory test program that I can run on Windows? ...
Use the following suggestions to fix the “There is not enough free memory to run this program” error on your Windows computer. The next step is to troubleshoot ...