Ender 3 V2 blank screen and LCD continuous beeping with clicks So I have been having an ongoing problem with my printer that I just can't solve. I don't usually ask the questions on stack exchanges until my problem gets unsolvable. Unfortunately like this one
Printer: Creality Ender 3 V2
Current Board: Creality v4.2.7 (Silent Motor)
Background: This started when I accidentally fried the T20 chip on the v4.2.2 mainboard when I tried to install the BLTouch incorrectly (I looked at the photo upside down) and and also accidentally pulled the wire out and what I guess is why the T20 chip was fried. I thought at first the PSU was the one causing the trouble at first so I replaced it. Then found the burnt chip and decided to upgrade the board to a v4.2.7. I installed everything correctly according to a video that I found somewhere on YouTube.
Current Problem(s): When I turn on the machine the light on the mainboard is on but there is continuous beeping coming from the display with small clicks like a clock every 1 sec. or so. The backlight to the display is on but nothing is shown. I just found with a multimeter that the bed and nozzle terminals give no volts back.
Firmware: I have tried to update the firmware to the official one off of Creality's website and also using the source code for Marlin v2.0.7.2 with PlatformIO. The tutorial I followed was here: 
                
            
Update [3/24]: Found that the firmware seems to not flash even after giving the .bin file a different name.
Extra Thoughts: I currently have no idea what to do. I think I might replace the LCD and its cable. I have only printed a few things and just want to get back to it but I don't want to buy a whole new printer to do so. I feel like I get closer to getting back to it every time I fix something but I'm starting to lose hope that it's just a never ending problem loop. I appreciate any help given.
Thanks to @Rykara, they led me to the answer. The whole problem was kinda a firmware issue but on the SD card side. The reason why it wasn't flashing was because I didn't flash the SD card to use the FAT32 format. Unfortunately I tried every other format option except that one before hand, mostly because I am mainly on a Mac. Now there is no more problems and I am back on track to printing. :)