My computer seems to not be recognizing one pair of DIMMs I have installed. I used to have 5gb of RAM now there is only 3 showing in the system report.
two slots that have the DIMMs in are now showing as empty.
Can memory fail like that?
Thanks
Sean
MacBook Pro, Mac OS X (10.7.5)
Yes, memory does fail exactly like that, and that is the definition of failed memory. No further debugging is needed, that stuff has died.
If it is aftermarket RAM that still has the vendors stickers on it, some vendors provide a lifetime replacement warranty.
Yes, memory does fail exactly like that, and that is the definition of failed memory. No further debugging is needed, that stuff has died.
If it is aftermarket RAM that still has the vendors stickers on it, some vendors provide a lifetime replacement warranty.
The memory has failed, I would get replacments. Its best to replace RAM in pairs and have an even number in the machine.
thanks, is it essential to remove those DIMMs do you think?
It is not essentail, if the memory has the same speeds then it should be alright, best to replace RAM in 2's with a Mac Pro. If in doubt though replace all of them, its not good to have two different speeds of RAM in a machine.
Depends on how memory dependant your applications are, if you use a lot of memeory best to replace all, if not then dont worry,
This should help:
Please do also try this first:
- just remove and reseat the RAM and the RAM riser cards.
I had exactly this happen to me - I had 8GB which one day suddently appeared as 4GB. Reseating brought it back (about six months ago) and it's been fine ever since.
Yes very good point! Happened to me, turned on one time and only came up with 6GB. Down from 8
So just remove the RAM "tray" and then just give them a little clean being careful not to touch the gold metal connectors and then replace them, see if that gives any improvement!
Missing RAM?
