Infotainment scree not working

Hello all, require some guidance please.

i have a 2017 Sorento, 3.3 V6, base model.

The infotainment screen keep rebooting.

What i have done so far;

• Hold the reset button for 30 or more seconds a few times.
• Removed the battery connection ( + ) for about 30 seconds.

but both items did not fix the issue.

Thank you for your help in advance.