Since you are seeing those vertical lines on the U2718Q no video cable Built-in Diagnostics, you have an internal hardware component failure. Dell does not repair monitors. All Dell would do is replace it while still inside the originally purchased warranty period.
Click the DELL-Cares username. On the right, click, "Send this user a private message". Share the private U2718Q Service Tag with them so they can check the warranty status.
DELL-Chris M
Community Manager
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56.9K Posts
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May 14th, 2023 05:00
Since you are seeing those vertical lines on the U2718Q no video cable Built-in Diagnostics, you have an internal hardware component failure. Dell does not repair monitors. All Dell would do is replace it while still inside the originally purchased warranty period.
Click the DELL-Cares username. On the right, click, "Send this user a private message". Share the private U2718Q Service Tag with them so they can check the warranty status.