Installed 8 GB (Usable 3.89 GB)

Dear Friends,

I have bought the new laptop, Acer Aspire V3-772G-5413 (GTX850m)

The laptop has 4 RAM slots and it came with two RAM cards (2 X 4 GB). The RAM cards are Low voltage.

The issue:

1- I found that the two RAM cards installed on the 1st and 3rd slots

2- I was planning to buy another RAM card, so for keeping the RAM cards came with the laptop in one place I removed the RAM card from 3rd slot to 2nd slot

3- I powered up the machine, went to system properties and found the surprise “ Installed 8 GB (Usable 3.89 GB) “

4- I removed the RAM from slot 1 to check if slot 2 has a problem, but surprise again “ Installed 4 GB (Usable 3.89 GB) “

5- I returned the RAM cards to default (slot 1 and slot 3), working correctly “ Installed 8 GB (Usable 7.89 GB) “

What is wrong here?!

Is it a faulty motherboard or faulty RAM cards ? Please help

Accepted answers

IronFly

it seems correct, it's not the same model but reading the Acer answer, you need to leave the 2 default ram modules on 1-3 slot and add the new one on the free slot ONLY:

http://community.acer.com/t5/Notebooks-Netbooks/Acer-Aspire-V3-772G-Upgrade-Options/td-p/211259

Bcommercial wrote:

"Thank you for your email. The Acer Aspire V3-772G-747a8G75Mamm has 4 memory slots, for a maximum of 32GB (4x 8GB). The current occupied lay-out is 2x 4GB. Without changing the current memory banks, you could add 2x 4GB or 2x 8GB.

(Memory Crucial 1.35v - 16 GB : 2 x 8 GB - SO DIMM 204-pin - DDR3 - 1600 MHz / PC3-12800 - CL11)

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All comments

macxfadz

Dear Friend,
I think you are using 32-bit Windows Operationg System.
Try to install 64-bit Windows Operating System.
http://us.acer.com/ac/en/US/content/model-datasheet/NX.MMCAA.004
as abvoe link mention,you could able to install any Operating System built on 64 bit architechture.
Install 64-bit Windows O/S your problem will be solved.

Remarak:
your system configuration may appear like this but do not worry,your motherboard already shard some memory for intel GPU(it depends on your internal GPU buffersize-> not dedicated video memory).

tag.JPG

IronFly

it seems correct, it's not the same model but reading the Acer answer, you need to leave the 2 default ram modules on 1-3 slot and add the new one on the free slot ONLY:

http://community.acer.com/t5/Notebooks-Netbooks/Acer-Aspire-V3-772G-Upgrade-Options/td-p/211259

Bcommercial wrote:

"Thank you for your email. The Acer Aspire V3-772G-747a8G75Mamm has 4 memory slots, for a maximum of 32GB (4x 8GB). The current occupied lay-out is 2x 4GB. Without changing the current memory banks, you could add 2x 4GB or 2x 8GB.

(Memory Crucial 1.35v - 16 GB : 2 x 8 GB - SO DIMM 204-pin - DDR3 - 1600 MHz / PC3-12800 - CL11)

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mohdzeyad

Thanks my friend for the help, the laptop came with windows 8.1 x64

Also i formatted with a fresh copy of windows 8.1 pro x64 with no luck

mohdzeyad

Ok, now it seems just right.

Thank you very much my friend for your help Smiley Happy

Odin_Asgarrd

the problem you were having is that for some reason, windows x86 is limited to only 4 gb no matter how much is installed!! Last year, my son built me a powerful gaming rig with 8 gb installed with x86, win 7 pro, and I had the exact same problem! My son told me to try x64, and the problem was solved, it showed the full 8 gb.