RL85 Pw_4005U doesnt'start up after memory module upgrade

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harie29
harie29 Member Posts: 3 New User
Good day,
I have an Acer Revo RL85 Pw_4005u with 4 Gb , upgraded to windows 10 home version 21H1 build 19043.1645.
The machine is getting very slow, cleaning up HDD in windows did not bring anything, so I bought a SODIMM DDR3L-1600 8 Gb memory module.
Exchanging the memory module works fine, but after putting everything together and pressing the small power button at the back-side nothing happens, the pc won't start up.
May you have any idea what is wrong? (I run the original bios, so no update done).

Thank you in advance for input.

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  • Commodore_1995#
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    When you unplug the new 8gb ram module and reconnect the 4gb ram module, does the computer turn on?

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  • harie29
    harie29 Member Posts: 3 New User
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    Yes it does turn on.  In fact I am typing now on the LR85 with the -old- memory 4Gb module installed again. But as said it is very slow, complete start-up takes more then 2 minutes..
  • billsey
    billsey ACE Posts: 31,722 Trailblazer
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    Well, spec says it should work with an 8GB DDR3L 1600 module. Perhaps the one you got was bad? My guess is though that you will get a much bigger boost in system speed by replacing that old HDD with a SSD.
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  • harie29
    harie29 Member Posts: 3 New User
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    Thanks for the hint on the replacement of the HDD, this is worth a try.
    As for the memory module: is it possible that the Bios needs an update and afterwards the memorymodule might work?
  • Commodore_1995#
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    An update may add to new rams and ssds. However, I would only update the bios if a black screen appears when installing new rams and ssds.

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  • billsey
    billsey ACE Posts: 31,722 Trailblazer
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    When looking though the BIOS versions available on the support site, I see no indication there has been any change to memory support. They have three different motherboards for the RL85 models, but that is due to the three different processors that could be populated in it. Acer only shipped with 4GB populated, but specs says 8GB should work...
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