6.00 GB RAM Installed - 1.75 GB RAM Usable!!

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AlbanHampton

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May 2, 2013
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I have just put 4GB RAM into a Toshiba Satellite C660D, it previously had 4GB in, but now it has 6GB in (1 4GB stick and 1 2GB stick). However, when I start the laptop up and go to start>computer>properties, it says that I have 6.00 GB installed, but only 1.75GB usable, and when I go into the bios it only recognizes the 2GB installed. HELP!!


You may say the 4GB is corrupt, but I put the other 2GB back in and it says 4GB Installed, 1.75 Usable.. I'm unsure if it was like this before though.

64 BIT windows 7 BTW
PjGujC9.jpg
 
Solution
Eximo
You have to be careful when mixing ram sizes you can run into unsupported configurations. Single and Double sided memory becomes a factor. If you haven't already, try switching the ram positions. (put the 2GB where the 4GB is now and vice versa)

Also definitely try the 4GB stick on it's own.

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Eximo

Eximo

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You have to be careful when mixing ram sizes you can run into unsupported configurations. Single and Double sided memory becomes a factor. If you haven't already, try switching the ram positions. (put the 2GB where the 4GB is now and vice versa)

Also definitely try the 4GB stick on it's own.

 
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Solution
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AlbanHampton

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I tried it in one slot, it turned on but was just completely black, I didn't bother with the other slot though.
 
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ihog

ihog

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Well, you should.
 
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