Your tablet is stuck in “Charging only” mode. Unlock the tablet, swipe down, tap the USB notification, and change to “Transfer files (MTP).” If that option is missing, restart the tablet.
You can find the official drivers through the following channels: usb driver for samsung galaxy note 10.1 gt-n8000
Avoid shady third-party websites. You want the official driver. You can find this easily by searching for on the Samsung Developer website or trusted Android forums like XDA Developers. Your tablet is stuck in “Charging only” mode