I bought a new laser because my first one would not read blu-rays, but would read DVDs. So I bought a new one and put it in and put my PS3 back together and I went to read a disc, the PS3 didn't even recognize it was there (didn't even show up on the XMB), and I did this with both a blu-ray and DVD. I listened to it, and it spun the disc up a couple times, and I could hear a faint beeping noise every time it did. So I figured oh well I bought a bad laser from the internet, tore it all apart and swapped the new laser for my old laser and put it all back together. I put a disc in the PS3 to make sure everything was working, and to my surprise the same thing happend, the PS3 wouldn't recognize a single disc, which it used to with my old laser. So now im dumb founded and have no clue what it could be, im going to go back and check every single ribbon cable to make sure i didn't mess anything up. Does anyone have a clue?