It's possible the replacement hard drive cable could be bad - I remember I ordered 5 of them once and 2 of them were dead on arrival. Either that , or the hard drive itself requires replacement. The flashing folder happens when the MacBook can't detect the operating system. If you have installed a new ribbon cable but the hard drive has failed, or a new hard drive but have not reinstalled the operating system, you'll see the flashing folder. Easiest way to check would be to boot into either Recovery mode or off an install USB if you have one and load up Disk Utility. If the hard drive appears and you can run First Aid on it and it passes, the drive should be fine. If the hard drive doesn't appear when connected to the ribbon cable but does appear when connected externally, your ribbon cable is probably bad.
Double check all the screen connections carefully. If they are properly connected and you still don't have any touch functionality, send the screen back to where you bought it from and get it exchanged for another. If the replacement screen does the same thing, it could be a defect with the actual connection on the logic board which the screen connects to.
From comparing the technical specs I would say no this isn't possible. The 2010 has a Mini DisplayPort while the 2012 has a Thunderbolt port instead - this difference in ports would mean that the holes in the housing would not line up with the other logic board so it wouldn't fit.
Hi Mason You can find a replacement screen here: https://www.etradesupply.com/oem-htc-evo-4g-lte-lcd-screen-and-digitizer-assembly-with-light-guide-black.html If you are attempting the repair yourself, there is a YouTube video here which you can follow: https://www.youtube.com/watch?v=Nc43lhXZ...
If the phone isn't charging it could either be a fault with the charger, the USB lightning cable, the battery or the charging port in the phone (or a combination of some or all of those parts) The charger and cable you can easily replace yourself, so I would start there! borrow one from a friend if you don't have a spare. If that doesn't fix the problem, then look at replacing the battery and charging port in the phone.
Hi I had exactly the same problem recently with a Mid 2012 13" Macbook Pro and tried all the steps you mentioned. Turned out that I had a broken battery sensor (flat connector on the bottom right hand side of the logic board which is connected to the button on the right hand side that shows battery power level) After disconnecting this connector and doing (yet another) PRAM and SMC reset, the Macbook started working. Will be ordering another battery indicator cable but for now leaving it unplugged. Charging light went orange and it detected and charged the battery right up to 100% and has been sitting running on battery power for hours now with the battery indicator cable disconnected! Also another thing to make sure is that you have the latest SMC Update installed , as SMC version 1.5 did resolve battery issues. (And SMC v1.8 on the 2012 model) https://support.apple.com/kb/DL1474?loca...
Hi Seeing as you have changed the hard drive cable already, the first thing I would say is try another hard drive or SSD that you know is brand new. If the customer has supplied the drive you don't know how old it is or whether it has errors etc. I have also encountered a lot of issues in the past with OCZ SSD's in older Macbooks. I use Samsung EVO or Sandisk Ultra II SSD's without an issue - Get either of these brand new, load the OS onto it and see if that stops the issue
Just to add my two cents ... I have managed to fit a logic board from a Mid 2012 13" Macbook Pro into the casing of a Late 2011 13" Macbook Pro without any problem. Not sure if the same would apply for the 15" though