Help! Got a CPU and wrong motherboard, now no picture

Apr 22, 2018
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I got an i5-8600, a gtx 1050 ti as an upgrade. My last were Intel Pentium G4560 and a gtx 1050. I put the CPU in an asrock b250m-hdv to find out that it is not compatible. I ordered a new motherboard which i am waiting for delivery. I put my old CPU back in in order to continue to go on it but I now get no picture with the gtx 1050 or gtx 1050 ti! What should I do? Should the new motherboard on its way fix the problem? By the way, the computer starts with the old CPU but there is no picture and acts as if there is nothing connected on the monitor.