Yes the photo indicates the device is connected to PC in preboot mode.

Did you reformat it rather than removing only some corrupt files? If you made a files backup before reformating then it may be possible to recover your favorites and recent history by re-naming "current.gpx" to "temp.gpx" and putting it back in the device's GPX folder. Be aware that if it was that file which bricked it then it will simply brick again so it might be safer to replace the data such as "Home" by re-entering manually unless you're prepared to maybe have to un-brick it again.

Most other files can be replaced using GarminExpress, that includes the device's official detail map entitlement. It won't offer a new basemap however and if you don't have a files backup then you can get one from here: [Only registered and activated users can see links. ]