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Opened my Laptop to clean the fans, but when I was finished it wouldn’t start up and instead show “No Bootable Device". The BIOS doesn’t show the serial number for my hdd or anything like that either. The model number is AN15-53 and I was told the ribbon cable needs to be re-inserted, but I’m not sure where or how to do that.
HDD Connection is hidden by the I/O Flex Cable, hope that your connection is fine because looks that you forced it.
Have you looked over the IFIXIT guides for this model? Acer Nitro 5 AN515-53-55G9 The battery replacement guide shows the parts best. This may also help to show you how to remove the drive properly: https://us.answers.acer.com/app/answers/… Your hard drive looks like it is sitting on the cover so I’m guessing you did not take off the hard drive cover off, gently removed the hard drive and disconnected its cable, before removing the main cover? Maybe not? I see the hard drive connector, in your not very clear photo, connected to the drive sitting on the main cover so it looks like you inadvertantly yanked the other end of the drive cable away from the connector ON the motherboard. The ribbon cable connects near the cooling fans. If the fan is covering it So flip the cover over and correctly remove the hard drive cover and drive module. Disconnect the cable from the drive and reconnect the ribbon cable to the slot for it on the motherboard. Need more help with this please ask before doing anything. Good luck.