RAM Issues

[DGB]

Today, I rebuilt my pc as a nut from the heatsink fell behind the board and I couldn't reach it without taking everything out and putting it back in. When my system booted up again, everything was working great, until I noticed on task manager that my 16gb were running at half speed (933 MHz). It detected and was using all the memory. I thought maybe it was just a bad install, so I took out the ram and put it back in. Now my BIOS and Task manager are saying that I only have 8gb of ram. The BIOS detects 2 sticks of 8gb in different slots, but is only displaying 8gb usable. The same for task manager, it is sayung I only have 8, but at the top right it says I have 16gb?? What is going on?? Is one of the sticks dead?

[bmx6454]

assuming it's the ram in your sig, and it's in dual channel, it usually displays at half the speed, but is running at what it should be.

[DGB]

10 minutes ago, bmx6454 said:

assuming it's the ram in your sig, and it's in dual channel, it usually displays at half the speed, but is running at what it should be.

It's in dual channel yes, but that isn't the problem. Only 8 gigs are being shown as usable in both the BIOS and task manager despite both detecting that there is 16