Hardware Having issues starting 3DS, ideas?

[PrincessLillie]

I went to update to the latest FBI and Luma Updater earlier. I put the files onto my SD Card, and removed it from the PC. So, I can get the home menu to load fine. The moment I go to select an app or game, it freezes for a while and then the BGM goes silent. So, I tried to back up some of my files, and some of them give me Windows error 0x800701E3 when doing so. I think this means I accidentally corrupted some of the files on my SD Card somehow, but I can't be sure. Anyone got any ideas?
EDIT: Just talked with people on the Nintendo Homebrew Discord, and my SD Card is fucked. Corrupted. Kaput. All the hard work I put into all those games, all the countless hours poured into them, FUCKING WASTED TO CORRUPTION.

 

[APartOfMe]

That moment when you realize your dreams of playing Mario sunshine on your 3ds are gone

 

[Pluupy]

Use a different computer and card reader. My old Toshiba laptop did shit like that and turns out for whatever reason, the laptop itself just couldn't read my sd.

You could also use a micro-fiber cloth to clean the contacts. Dampen the cloth (but not dripping) with 70% isopropyl alcohol and wrap it around your finger. Gently rub the contacts of the SD and if possible, the card reader.

This may sound dumb, but it also helps to insert a card or something to help press the contacts against the reader effectively. I have to do this for my o3DS XL's SDHC card. Literally lift the SD after it's been inserted into the reader, shove a credit card under the SD, and it will make it press harder. Then insert the reader into a different computer.