ram slots 2 and 4 not working

ram slots 2 and 4 not working: HP Compaq Pro 6300 Microtower (MT) RAM upgrade. G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin PC RAM DDR3 1600 ... . Memory slots used : 2 of 8. How to enable all ram? : r/ASRock.
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ram slots 2 and 4 not working

2026-03-25


I noticed 4 slots in the chipset, 2 have white slots and 2 black slots. In 2 white slots there are two 8 gb ram. I want to add a 16gb ram to 1 black slot.
Hello! Second RAM slot is not working! I try put there 2 different DDR3 (original Samsung and Kingston). Both of them working fine in the first slot.
Task manager displayed that I have used 2 out of 4 RAM slots. (The 2 RAM slots are what I currently use) So where are the other RAM slots?