I have a circa 2010 Sony Vaio VPCEB25F that has two memory slots and came stock with 2x2GB; I can’t remember the specs, can fill-in when I get back home. I just purchased two 4GB Team DDR3 1600MHz 1.5V RAM DIMMs and properly installed them.
When I boot the Vaio with the 8GB installed—which is the max it can use—I get the VAIO start-up screen, then a GRUB menu that asks: Ubuntu, Advanced Ubuntu, memtest86, and memtest86 15006 (this is off of my own memory). If I choose the first, the screen goes blank, then makes a click and shuts off, then restarts to the same menu screen. The second option allows me to choose my kernel and if I choose recovery then it goes into GRUB terminal(?) but I don’t know enough to troubleshoot that route. The third and fourth options both run the
memtest, but it does the same click and restart shortly after starting and doesn’t give me enough time to really read it. If I put the stock 2x2GB back in, it boots with absolutely no problem.
I’m running the latest Kubuntu with a 500GB HDD. I’ve tried each new card in both slots individually and concurrently, no dice. I’ve also tried the initial boot on battery and on charger, still no change. I read that mixing voltage is bad and mixing speeds can be bad as well, but as far as I can tell, having symmetrical cards should still be able to boot fine whether the new cards are faster speed and/or higher voltage, they will just be limited by the motherboard's capabilities.
I need some logic check and some help in troubleshooting. Any more detail needed will have to wait another 7 hours or so till I get home. Thanks in advance for any help.