03-14-2016 11:21 PM
Welcome to Lenovo Community!
You can try doing this:
Note that if you reopen msconfig the maximum memory checkbox might be unchecked + maximum memory field set back to 0, however that should not change anything to available memory anymore.
Other than that, shut down the computer and reseat the memory modules. or remove the modules and try various combinations.
You can also click here for better understanding.
I hope the above information helps.
Tap that kudos button if I helped.
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