Windows 7: 8gb memory installed only 4 usable. acer aspire laptop

I have an Acer Aspire 5552G-7641 laptop with 4gb of memory (2x2gb). The max memory supported is 8gb so i put in 2x4gb memory sticks. When I check the system info it says 8gb installed (4 gb usable).



I read alot of forums and it says to change the dram voltage but I have no idea how to do this. The BIOS that comes with this laptop is also very basic and does not allow customization of specific settings.

Any tips or information would be greatly appreciated.

Type msconfig in search. Make sure the max memory is UNchecked.

yea that is unchecked

Can you provide a snip of task manager with the performance tab showing?

You do have a 64bit Os right?

You may have to "jiggle it".

Best practice: between each step below, shut down, unplug the power adapter, remove the battery, and press the power button for 15 seconds or so, then make the next change.

First, remove the new module, restart the computer, make sure all 4GB is recognized. It so, shut down.

Next, use compressed air or some other method to clean out that second RAM slot. Dust, lint, or a strand of hair can make just enough of a gap to affect the contact on all the pins. Then install the new module again and test. Pay attention to how it clicks into the slot, be sure it is firmly seated (without breaking anything). Test.

If that does not work then switch the modules. Put the new module in the old module's slot and test it alone. Does it report all 4GB?

If it does then install the old module in the second slot and test.

Whether any of this works or not, run Memtest86+ - Advanced Memory Diagnostic Tool for at least 3 passes to see if it reports any errors. Set it up before you go to bed and let it run overnight.

We should wait for a reply to this...

It says so in his system specs I doubt a 32 bit system would recognize all 8GBs anyways. I would go with TVeblen's advice. That excludes any hardware fault. Then we can look around for a better configurable BIOS to play with the voltage.
-DG

Lol I could put anything in my spec doesn't mean its true like the guy who wanted me to fix his computer once and he said he had over clocked it to 9ghz... I was like oh so your a world record holder and have access to liquid nitrogen and a phase cooler.. Lmao

A 32 bit wouldn't even make it to 4 gigs