Sony PlayStation 2 (PS2) Console "ribbon wont advance" Questions

...wont spin Hi i was wondering... whats going on? i replaced the laser of my ps2 with a new one.. i desolder the soldered dot and seemed it worked but then i hear strange sounds so then i open it up ...

...ribbon went in..I've tried to use a small screw driver to make them connect, but I can't get her to power up.... Is there anyway around the power switch on the motherboard to get the unit running ? ...

...wont stop, what is wrong with it pls help this sounds like a loose "ribbon", unfortunately the problem is not easy to fix, the bottom case needs to be opened. find the golden-orange ribbon near the ...

wont work, i checked the fuses and they are ok. Then I noticed flat cable of the upper screen was cracked and so I ordered a new upper screen, do you think it will solve the problem? Thanks in advance