A third of my memory disappeared

I had 6 gigs, but I always keep task manager and resource monitor open and I noticed that all the little numbers don't add up to 6 gigs anymore. They add up to four, which I assume means that one of my memory modules is bad as I have 3x2GB sticks.

I should have known something was wrong. The other day my computer booted up on the first try.

Ever since I got this motherboard (the 2nd one, first was RMA'd), I've had to hit reset during bios (but before bios would atually have anything on screen) because it would just cycle forever and not let the os boot (I know it's cycling thanks to a debug LCD on the motherboard).

Obviously I have to open her up and plug, unplug, and switch slots a lot, but that this would happen kinda baffles me and I was wondering if anybody has anything to share or help.

Probably a stupid question but do you use a 64bit or 32bit OS?

I thought you were coming here to tell us about your recent lobotomy?

Well, a bad DIMM does seem like the most likely culprit. It happens sometimes. If it were failing, that might potentially be causing your boot problems. Since you've presumably had the same symptom on two motherboards, I'd call a bad RAM stick fairly likely at this point.

Might just be a seating issue; if you've never tried swapping them around and reseating them before, now would be the time. Otherwise, you'll have to figure out which one is bad and replace it. It'll probably be under warranty.

If you do track it down to a bad RAM stick, you could also use this as an excuse to just buy 12 gigs instead. RAM has gotten astonishingly cheap over the last year or so.

Malor wrote:

If you do track it down to a bad RAM stick, you could also use this as an excuse to just buy 12 gigs instead. RAM has gotten astonishingly cheap over the last year or so.

Unfortunately, all my memory came back, so no upgrade for me!
64-bit OS
If all the memory that disappeared involved most of my knowledge about comics, movies, tv, cartoons, and other useless crap,
and I had the opportunity to replace it with all the stuff I'm supposed to know, I'd probably be celebrating rather than looking for help.

I think something happened when we had a storm the other day. The power went off and on two times within the space of a couple of minutes. I turned off and unplugged my computer but it went through at least one of those cycles.

The motherboard only natively supports DDR3 1066, but is supposed to allow overclocking which is why my memory is actually DDR3 1600.
edit: I am no longer trying to oc my memory and now it boots up without the bios cycling forever. This is disappointing. However, I've booted up a couple of times and my memory is still all there. This is good.

Prozac wrote:

I thought you were coming here to tell us about your recent lobotomy?

Lol - I, too, thought this thread was about something else until I saw it was in Tech and Help.