XPS 8940, two ram slots not working | DELL Technologies
When I place both RAM sticks (2x 2GB DDR2 Corsair) in the two available slots of the motherboard. Once I boot it up, the computer won't boot.
How To Choose RAM In 2025 [Simple Guide] - GamingScan
DDR generation: DDR, DDR2, DDR3, and DDR4 are all different types of RAM that aren’t interchangeable. If you’re building a new computer with a new motherboard, you’ll need DDR4 RAM.
PC Desktop DDR 2/DDR 3 RAM Memory Slot tester
This difference in notch position is also why you can't use DDR3 RAM in a DDR2 system or install DDR2 RAM into a DDR3 slot (even though they have the same number of pins).