Tablet er gået ned

Hej alle eksperter :)

Min mors android tablet mistede pludselig forbindelse til vores wifi, og så begyndte der at komme disse pop-up beskeder:

Unfortunately, Google Play services has stopped
Unfortunately, Gmail has stopped
Unfortunately, Calendar Storage has stopped
Unfortunately, the process android.process.acore has stopped
Unfortunately, the process com.google.process.apps has stopped
Unfortunately, Weather & Clock Widget has stopped
Unfortunately, Calendar has stopped
Unfortunately, Exchange Services has stopped
Unfortunately, Google Play Store has stopped
Unfortunately, the process android.process.media has stopped
Unfortunately, launcher has stopped

Den kan slet ikke connect til wifi, den springer tilbage til off, når jeg prøver.

Jeg har prøvet at gendanne den, men det virker ikke, og ingen af hjælpen på google søgning hjælper. Det er som om den er gået helt ned :(

Hvad kan jeg gøre?