I've just added 2GB of Memory to my 10GB (4GBx2 + 2GBX2). They're all in their correct slot, and the 2GB's speed match.
I am now noticing that windows is showing "12.0GB (7.99GB usable)". I checked the performance tab in task manager and it seems like the Available and Free memory counters roughly add up to 12GB.
Is it just windows not showing the correct number?
Best Answer
I feel like an idiot.
I decided to remove it and attach it again, making sure that it's pushed in well. And it's ok now.
Not sure why it was recognised but unusable though, rather strange.