I sent my CECHA PS3 system to have the CD laser replaced. When I got it back, I plugged it in, not realizing that the power switch was in the On position, and the light immediately turned green. Despite this, there was no picture, and I couldn't connect a controller. I tried booting into safe mode, but that won't work either. I tried swapping hard drives, nope. I tried connecting a controller, it acts like it's not even there. I tried removing the HDD and booting into safe mode, still nothing. I tried using AV cables, nothing. The HDD access light turns on once at boot-up and then not anymore. What happened?