Dell inspiron 15 3511 prolems with keyboard, touchpad, hinge and jack audio 3.5 mm, please help me fix this problems

please help me, I have had this problem for a long time, I have a problem with my laptop Dell Inspiron 15 3511, I have a problem with the keyboard, some keys don't work, with the R, T, F, G, V, B, 5, F2, Left Ctrl and some other keys sometimes they also don't work but for the R, T, F, G, V, B keys it will work if I press them simultaneously and quickly click continuously then it will work, but if I press the key several times. combinations such as swallowing the r and t keys will produce the letter Y, or other combinations that can press the F2 key and others, I have experienced this problem starting with the r key which is difficult to press, this problem will always start when I just open and turn on the laptop and it will disappear for the R, T, F, G, V, B keys and it works but sometimes it's also difficult again, and I have a problem with the 3.5 mm audio jack not working, and a problem with the touchpad not working sometimes and sometimes working, for the touchpad problem I have found the solution in this community by turning off enablecursorsuppression in the registry editor. I had a lot of problems with this laptop, even when it was under warranty and had not been used for 1 year, the hinge on the right side of the laptop was also damaged, and there was no guarantee.