The next time I get a "good" 128MB RAM card, I will replace the 64MB RAM
card again.
John

Memtest86+ *first*, then you boot an OS.

Download is half-way down the page. Available as an ISO
so you can burn a bootable CD.

http://www.memtest.org

Memtest will detect stuck-at faults.

Hi Paul,

Thanks for that info regarding memory testing, etc.

That is what I had planned on looking for (RAM tester) for the next time.

You can boot a Linux LiveCD and do some sorta test,
because there's nothing to damage on a LiveCD.

I have Linux AntiX 16.2 on a CD (for Live bootup, etc.), but it's display
driver(s) is "incompatible" with the display hardware in this Gateway desktop
PC. I did NOT have that problem with the other PCs I tried it on.

Regards, John

Windows on the other hand, does not have that luxury,
as it likes to *write* the boot drive. This is why
you do everything in your power, to verify the RAM.

1) memtest86+, at least one full pass with no errors.

2) Linux LiveCD, then, go to mersenne.org downloads and
get a copy of the static Prime95 for Linux 32 bit or
Linux 64 bit. According to which kind of LiveCD you got.
I'd want at least four hours of Prime95 Torture Test
where all the threads started, remain green. No
red/dead threads which are indicating a RAM error.

Prime95 is for detecting transient faults caused
by computing load. Like, your CPU heats up a bit,
and on the modern processors with memory controller
inside the CPU, it's throwing a few errors.

HTH,
Paul