Not sure which Android version you have. On older versions that didnt have any sort of encryption you could dump the whole partitions as Images and then mount them to look for data with utilities such as testdisk or photorec. If you want to dig yourself into this matter (which people normally do when the information is precious) you can check out this thread and the most helpful posts to try and recover the data. https://forum.xda-developers.com/galaxy-nexus/general/guide-internal-memory-data-recovery-yes-t1994705

Problem is at the right end of the cable. Check if the contacts are good or maybe the right side isnt in. Also I am giving you this tip , because it's very hard to pull in the cable to the connector even when the lock is lifted. Put a piece of tape on the ribbon cable and use it to pull the cable all the way in. That should do it and not harm anything. cheers

There you go.

Hey there . It seems to be the Q4590, responsible for Optical Disk Drive Power Control. So Superdrive related. >> Digikey Link << >> Datasheet <<

Have you also detached the keyboard? Power Button is part of the keyboard. If yes try to stick a tape on it and pull it all the way in to the connector. Then lock the connector. Also try an SMC reset. The last option would be to short two power on pads on the logic board to see if the machine powers on.

That is because screen replacement isn't that easy. The two cables on the top of the LCD units (one cable is for Digitizer and the other for LCD Data) are very very fragile. If you bend them too much you will break them and cause them to fail. In your case you have bent the digitizer cable too much. The ifixit manual doesn't point it out much afaik and my friend screwed is digitizer lately the same way as most people do. I cant find the exact video but here it's also said https://www.youtube.com/watch?v=wp8wv8TY... @7:50 - there is also an 4S video for the disassembly that you might want to check out but he doesnt show that particular reassembly part where he highlights to be cautions . this particular step is the same for the 4S. You have to ensure that the digitizer isnt squashed pull it all the way through and be careful when bending it. Having said that , you will probably need to throw your LCD units into the bin because you cant replace the cable and need to order new Displays.

What do you mean? Have you checked the battery health with coconutBattery?

Most likely the Backlight line on the logic board was shorted. I don't think that a new LCD will fix the issue. But you can try.

Yes you can. I own a Xbox 360 S 4GB myself and got my hands on a dead old Arcade 360 with a 20GB harddrive a few years ago. I opened up the old HDD case and plugged the SATA HDD into the Xbox slim's harddrive bay without any case. Everything is recognized , since it's a Microsoft signed HDD. But since it was lose I decided to order an aftermarket housing for the drive. Eventually the HDD Slim case came after a few weeks from china for a few bucks and I took the drive and put it into the case. Plugged it into the Slim console and it did fit perfectly. Works like it should do.

Well, if your old HD fails and the new one makes problems.. then you might consider checking your HDD cable, maybe that's causing the drives to fail. Also try to download a ubuntu live cd or just gparted to format the drive. Maybe it will work.