No display after installing ssd

[GotBetrayed]

After I installed the ssd in my computer, there is totally no display on my computer. After removing the ssd and plugging back the wires into my old hdd, the screen still does not work. I think I screwed my computer during installation or something? Anyone?

 

[jtjt00]

Remove and then plug in the memory modules.

 

[GotBetrayed]

Thanks. I think I bring it down to sls to check later. I not good at fixing this kind of things. Scared I screw up more lol