Hi, I'm Sandy and I look forward to help you today.
I'm sorry about the issue.
Please follow these steps once and tell me the outcome:
Turn off the laptop.Disconnect the power cord.Now unplug the battery. You can turn it over to remove the battery.Hold down the power button on the laptop for 1 minute.Now, connect only power cord and restart it.
I'm sorry, I'm out of ideas. I'm opting out and leaving it for other experts. Thank you.
Other expert will reply back to you soon. Thank you, ***** *****
Often the FAT_FILE_SYSTEM errors are caused by some form of disc corruption either in the disk itself or in the master boot record. I would reccomend using the external adapter chord you mentioned to run a disk scan from another windows computer (assuming that the disk is not encrypted.) The following link details how to do this: http://knowledge.seagate.com/articles/en_US/FAQ/184611en?language=en_US . Safe mode in Windows 10 works differently than in previous generations. Occassionally you'll have to use shift+F8 in order to get into it, and if you have a solid state drive or UEFI enabled in BIOS it won't work properly. In these cases the only option would be booting from a recovery drive. Let me know how you make out and i'm happy to provide more assistance as needed!
I assure you that I did not copy and paste from the Microsoft forums. I sent you a link to a procedure for checking the disk externally. Your options are quite limited without media. I'm happy to help more if there are more specifics, or results from any of the mentioned steps.