Laptop does not turn back on after a flash

[orientalsniper]

Bough a motherboard (alibaba) to replace one that was not working, it's a MX-237, everything was set up, but it detected my battery as not original, so I flashed a modded one from here (didn't work), then I flashed one from Sony (R2087H4).

Now it doesn't even power on, no lights, no fan, nothing comes up or changes when I press power button.