Hi Eng_ahmedTawfik,
Thank you for considering Sony Community!
Since this is already hardware issue, we highly recommend visiting Sony Authorized Service Center for further assistance. VPCZ138GA is a non-U.S. model. Unfortunately, we have limited information about the part/part numbers that you might need.
For further assistance, we kindly recommend visiting our Sony Global Website for information on contacting the Sony Support Center in your region at http://www.sony.net/SonyInfo/Support/. Due to proximity, they are in a better position to respond to your questions or concerns.
Regards,
Vincent
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