Okay, so right off the bat, I am not too knowledgeable on the ins and outs of computers. Just something to keep in mind.
So, I bought my PC pre-built about two years ago. This is the copy and pasted info about the computer from my orders page I just looked up right now: ABS Cyclone Aqua Gaming PC - Windows 11 - Intel i7 14700F - GeForce RTX 4060 Ti 8GB - DLSS 3.5 - 32GB DDR5 6000MHz - 1TB M.2 NVMe SSD - CA14700F4060ti
(Please let me know if anything more specific is needed)
Around the same time, I also purchased two Acer Nitro gaming monitors. Since being set up, they've worked completely fine. Both displays worked and I've had no issues until now. Literally haven't even changed the ports they were in.
Today, after powering on my computer, only one screen was working. The other said 'no signal'. I tried troubleshooting on my own based on what Google was suggesting, plus a few small threads so I'll list everything I've tried:
Updated Graphics Driver (said I was up to date/there were no updates)
Tried to 'Detect' a second display in Display Settings (said it couldn't find one)
Tried the manual shortcut for resetting the Graphics driver on Windows (ctrl+shift+win+b)
Changed display mode to extend.
Unplugged everything (including both monitors and PC) multiple times to clean all ports and cables (this is also when I discovered that both monitors worked fine only if they were plugged into ONE specific HDMI port. The other two yielded no signals)
Briefly opened the computer to make sure RAM sticks were plugged in properly after seeing that was someone else's problem. I did nothing else, including removing anything for fear of messing something up.
Dusted the inside of the PC while I was in there.
Used the buttons on the back of the monitor with no signal to try and change the source. I ended up trying every single option, including turning Auto Source on/off, but each one still resulted in no signal.
Sorry if this is a lot, I wanted to get all the relevant information I could, but if anything else is needed to make more sense, just let me know!