Question Loud fan, no signal on display. Shut's down after 13 sec.

Sep 21, 2019
Hi there. I have an Lenovo Ideapad z510. Today I've changed the CPU (from i3 to i5-from a toshiba satelite -the cpu model is the right one) I've added 8gb of ram (crucial) and a 120gb ssd (crucial). After I've put it all together and pressed the power button. The lights on the keyboard turned on, the fan turned on for 13 sec.(pretty loud) , (no image on the screen)...and shut's down. Do you know what can it be? Thank's
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