Oversumo

Has anyone encountered this type of situation ever? Or can anyone please enlighten on what might happen?

PC not turning on after secondary HDD cable (SATA Cable) re-plugging. Last night, I had to unplug and re-plug (My brother's HDD was broken and he tried to check that using my SATA cable) my secondary HDD cable. My boot drive is in a different NVME SSD. So, when I re-plugged the HDD again, my PC started acting weird. 1. My RAM EZ debug light showed up. So, I reinsta...