Question My external hard drive crashes my system when it's plugged

Dec 23, 2019
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I wanna know if is there some fix without formatting it, because i have some important files in it. When I unplug it, the system works normally.
 
When you say your external drive crashes your system,

Do you mean on boot? Or its unplugged, you boot to windows, you plug it in and it crashes your system?

If its the first, boot your system without the drive plugged in, attach the drive and get your stuff, format etc

If its the second, do it again and record the time it crashes, boot ahain without the drive and check your event log for errors relating to the drive and let me know the error codes

Start menu > type event log > check application logs and system logs