It shouldn't brick your PC, but it has happened as a result of computers improperly complying with UEFI spec. There are far easier and safer ways to clear a hard drive than deleting every file and folder recursively.
The first step of which would be, don't try to clear a hard drive while you have it mounted
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
^other^ ^rules^
It shouldn't brick your PC, but it has happened as a result of computers improperly complying with UEFI spec. There are far easier and safer ways to clear a hard drive than deleting every file and folder recursively.
The first step of which would be, don't try to clear a hard drive while you have it mounted