HP G70-250CA 8GB RAM upgrade problem

I am trying to upgrade my HP G70-250CA from 6GB of RAM to 8GB, but cannot get it to work.
It is currently running fine with 6GB of RAM, configured as one 4GB and one 2GB stick. I have purchased a second 4GB stick. When I replace the 2GB stick with the second 4GB stick, the system does not boot. All I see at startup is a black screen -- it does not even show the BIOS splash screen.
Either one of the 4GB sticks works fine by itself, I tested them both, and the current configuration of 6GB works fine too. From my reading, this system should be able to support 8GB of RAM.
Any ideas what the problem might be, or further steps I could use to diagnose?

bruce_g wrote:
I am trying to upgrade my HP G70-250CA from 6GB of RAM to 8GB, but cannot get it to work.
It is currently running fine with 6GB of RAM, configured as one 4GB and one 2GB stick. I have purchased a second 4GB stick. When I replace the 2GB stick with the second 4GB stick, the system does not boot. All I see at startup is a black screen -- it does not even show the BIOS splash screen.
Either one of the 4GB sticks works fine by itself, I tested them both, and the current configuration of 6GB works fine too. From my reading, this system should be able to support 8GB of RAM.
Any ideas what the problem might be, or further steps I could use to diagnose?
Hi,
Have you updated the BIOS to the latest one? It might help.
Dv6-7000 /Full HD/Core i5-3360M/GF 650M/Corsair 8GB/Intel 7260AC/Samsung Pro 256GB
Testing - HP 15-p000
HP Touchpad provided by HP
Currently on Debian Wheeze
*Please, help other users with the same issue by marking your solved topics as "Accept as Solution"*

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Ram upgrade problem!

For: Toshiba Satellite L675D-S7047
Upgrade from 4GB to 8GB.
Both sticks are good (memtest pass) They are the 8 block ram sticks. If I leave 1 2GB in and put a 4GB it will boot. if I put in both 4GB sticks it will not boot. I did a bios update.
Any ideas?
Solved!
Go to Solution.

Satellite L675D-S7047
It's an old story. If you surf the forums here, you'll find the same problem mentioned often. Because Toshiba machines are sensitive to specs, modules are often incompatible. Unless you buy the memory from Toshiba or the best memory made by Kingston, it's a crap shoot. Often they are compatible, but sometimes they are a bit out of spec.
Toshiba PC3-8500 DDR3-1066MHz 4GB Module
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Hi Roger,
well, my problem ist, that inserting the new 2x4 GB RAM modules in the two remaining slots of the iMac should have worked just fine and given me 12 GB of RAM. But it only showed 6 Gb of RAM and two empty slots, which weren't empty!
Swapping the original Apple RAM into the other two slots and using the Apple RAM slots for the new 2x4 GB RAM modules was the only way to get the iMac to give me the expected 12 GB of RAM.
So, I am still wondering, if there is a problem with the new RAM modules? It does not state in the manual, that 4 GB modules would have to be inserted in a particular slot for them to be recognized fully. It just says to stick them in the empty slots.
I knnow, it maybe a no brainer, since all seems to work fine now, but that Mac wasn't all that cheap and I don't want to risk anything.
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