so i have recently built my pc i got my motherboard and cpu and all parts i have a intel pentium g2020 i was putting in my cpu and then when i started to close the latch it was making a screeching sound like snapping or something like that so i took cpu out and tried agin and same thing happened so third time i put cpu in and pushed all the way down it was still making the sound when pushing then i put heat sink on and i gave my computer to technician to wire it up he did that and installed my gpu and ram when i got home and plugged it up i was all excited and then computer turned on and stayed on for a long time but nothing came up on screen i plugged vga into gpu and then i unplugged coz nothing came up so i plugged into motherboard still screen said no signal and i took gpu out and still same problem so i don't know what to do i think i ether broke my cpu or motherboard well at least thats what the technician said but then i took heat sink off and put it back on and plugged it in and turned computer on and computer starts but cpu fan doesnt then it starts a second latter then in like 10 or 15 seconds computer turnes it self of i dont know what it is because i dont see whats on screen please help me if you can thanks