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Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, bear with us; re-confirm and post back with the complete model number of the Toshiba.
Appreciate the post but "... N022L10UT..." is reported back as a non-valid Toshiba product.
When convenient, please try again.
Still, an easy user doable try is to check / replace the connecting cables (if have not been done). This would serve as both an attempt of a fix and as a test by process of elimination.