[TriLUG] Memory upgrade problems - brainstorming

[Jose Lodeiro]

Steve, I would try to reset CMOS as the final troubleshooting step after
loading the new modules. It's not rare to have a faulty module out of a
pair, but all 4 modules is a stretch.

ftp://ftp.dell.com/Manuals/all-products/esuprt_desktop/esuprt_optiplex_desktop/optiplex-780_Service%20Manual4_en-us.pdf

Good Luck!


On Tue, Mar 25, 2014 at 11:26 AM, Steve Holton <sph0lt0n at gmail.com> wrote:

> Is there something about memory upgrades I'm missing?
>
> I have a Dell Optiplex 780 with 4G of ram (2x2G) I'm trying to upgrade to
> 16Gb (4x4Gb)
>
> I checked the specs of the installed memory, Dell specifications,
> recommendations on the web,  etc. and determined  I needed:
>
> DDR3 PC3-10600, DDR3 PC3-12800, DDR3 (non-ECC)
>
> I purchased four DDR3 PC3-1600 -- 4Gb modules
>
> This upgrade is for memory size, not performance (this isn't a gaming
> system) so I'm not
> looking to overclock or squeeze the last nanosecond off the CAS latency.
>
> But I wasn't expecting BIOS failures on every module. The system boots as
> before with the original modules in place, but adding any one (or pair) of
> the upgrade modules into the mix (or using the larger modules alone) leaves
> the system unable to get into BIOS setup, and with diagnostic lights
> implicating memory.
>
> One possibility is that I've somehow mis-interpreted the kind I need and
> the memory modules i have are incompatible with this system.
>
> The other possibility is that I managed to get 4 faulty modules.
>
> Are there other likely explanations, or suggestions to try?
> How likely are memory module failures?
>
> --
> Steve Holton
> sph0lt0n at gmail.com
> --
> This message was sent to: Jose Lodeiro <lodeiroja at gmail.com>
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