i have a lot of youtube subscriptions, and when i open new tabs for all of the videos, it slows down my computer. i bought a 16gb stick of ram, same speed as my other sticks, but when i put it in, my computer stops working. i get nothing displayed on my monitor, and the computer reboots every 30 seconds. is this a motherboard issue? this stick brings my ram total up to 24. when i remove one 4 gb stick, the computer boots like normal.