Problem inserting trapezoidal ddr4 into motherboard connector?

Question

Iron

Computer upgrade:
New:
Processor: Intel Core i3 Skylake 6100
Motherboard: ASUS B150M-D ddr4
RAM: Crucial CT16G4DFD8213 DIMM 16GB DDR4 2133MHz
Old:
Video card: ATI Radeon HD 5770 1GB, 850MHz
Chassis: Midi Tower InWin C616 Black ATX2.03 450W AirDuct
Problem
Computer starts but monitor does not turn on. I tried different monitors, connectors and dvi, vga (two different working monitors), I connected monitors both to the built-in video and to the video card, which I connected and disconnected.
All the old iron is 100% working, and I write from it.
When you turn on the new motherboard, the coolers work, the light on the motherboard shines and that's it ... I hear a long squeak and two short ones, which means that the mother does not see the RAM.
Yes, troubles with RAM. I believe the bar is working, but how do I insert it? This motherboard has only one latch, and the RAM has a trapezoidal shape at the bottom (which, to put it mildly, "stupid" person came up with this ...) because of which, when clamped on one side, a skew is obtained, i.e. there is a clamp on one side, and on the other hand, the board comes out. I tried not to click, but it does not help.
Please let me know if anyone has come across this problem.

Answer 1

If that's what you
mean, then "You just don't know how to cook them!"
There are two installation methods
1. Inserted into the trapezium, the bar is 15 degrees and slightly higher than the latch. Then it sinks into the trapezoid and gently presses on the corner near the latch. The bar slides inside the trapezium and is fixed with latch
2. The bar is strictly parallel to the slot, the latch is open. The bar smoothly lowers into the slot to a slight resistance, while the latch may begin to close a little.
Then carefully push in the corners, if it doesn’t go in, then push the corner where the trapezoid is before landing, then push on the corner where the latch is before closing
OR watch the video

Answer 2

Such problems happen if
1) Insert the wrong memory format (but apparently not your case)
2) Insert backwards (then the key interferes).

Answer 3

I experienced a similar problem with inserting DDR4 into the slot as in the Fixid picture: the
bar was inserted either on one side or on the other, and no more than a millimeter went in the center. Pushing any reasonable effort did not work.
At first, I also sinned on the trapezoidal shape of DDR4, however, inserting the bar with the butt end near the partition, I made sure that the depth there was sufficient (more than 2 mm). Where exactly the plug was not clear.
I decided this: put the bar on a sheet of paper, circled and cut out the shape. After the paper form was fully inserted into the slot, it became distorted and it became obvious that the problem was the excessive size of the plastic bulge on the side wall of the slot opposite the movable latch; after the full insertion, the lateral lower groove of the bar should fall on this bulge.
After a little development of the bulge by the plank itself, it was possible to insert it by applying pressure from the problematic edge.