S2340L, turns off and on randomly

Dell S2340L monitor connected via HDMI to a GTX 1050 Ti randomly goes dark and comes back on, sometimes the blackouts last for 2-3 seconds, sometimes 5-10. And occasionally it goes whole days without any blackouts, and sometimes it gets so bad I have to stop working. I'm pretty sure its not power surges and I've disconnected and reconnected the cables. If it becomes too much, I turn off the monitor for a minute and turn it back on then it works fine for 20 minutes or so and then the off/on drama starts all over again. No money to buy a new monitor and I love this one, please help. First post here, forgive any mistakes. Edit 1: the turn off-on process takes 2 to 3 seconds at most. too long to get used to, too short to get fired up about. its been a full month before i was motivated enough to post this. Edit 2: Have already run the Dell diagnostic test for the screen, the Self check (STFC) went fine, the Monitor Built-in Self Test (BIST) didn't. CPU : Intel Core i5 - 8400 @ 2.80 and 2.81 ghz Motherboard : Gigabyte Z370 HD3 RAM : Nameless 8 GB SSD : 256 GB, just the OS in there HDD : 1 TB GPU : GTX 1050Ti Chasis: No brand OS: Win 10 Pro 64 bit