Dell Vostro Screen Display Problem After Purchase

I purchased a Dell Vostro laptop from Etken Bilgisayar on September 7, 2020, for approximately $611. Shortly after purchasing the device, on September 14, the screen suddenly developed a display problem in the form of colored horizontal lines along the lower part of the screen while I was not doing anything on the computer. The issue continued for approximately one day and then resolved itself without any intervention on my part.

The fact that the problem resolved itself does not mean that there is no issue with the device, as I clearly experienced a visible screen malfunction. Furthermore, I have only recently purchased the laptop, and it is still under warranty. I am concerned that this problem may occur again.

I tried contacting Dell technical support, but the number does not appear to be working and I have been unable to reach an authorized representative. I request that the screen issue with this newly purchased, warranty-covered product be thoroughly investigated, that the exact cause of the malfunction be identified, and that it be permanently resolved under the warranty.