Have u tried booting using only 'Text Mode' not to ofamiliar with Fedora but most install splash screens have a list of options, some accessed by pressing F2 or F3. This should then bring up some alternative screen resolutions, try Text Mode.
Another alternative, assuming you have a copy of Windows, is to boot into that OS, and download acopy of FreshDiagnose. There's a Wizard that allows you to save text files reporting all your hardware, BIOS, Partition info. I t can display every single parameter of your Screen, from min to max refresh rates (in Hz) to supported resolutions. If you find one that Fedora also uses, then go with that
The first option, however, is the best.
good luck, don;t foget to let us know how you get on!!!
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