Solved My PC is no longer recognizing my monitors

I purchased this CyberPower PC from Amazon back in January:


It was crashing quite often (about once a week - sometimes more, sometimes less). And I noticed that it was crashing when I had multiple tabs open at once, and so I thought that it was related to having insufficient or faulty RAM. That's why I tried to upgrade the RAM with this RAM that I purchased from Amazon a few weeks ago:


(Please note that it's the same type of RAM that came with the computer.)

I didn't think that I would have any problems since adding more RAM is super easy. But when I plugged everything back in and tried to start up my computer, my monitor was no longer being recognized (not by the video card's HDMI port, the video card's 3 Display Ports, or the motherboard's built-in HDMI port). I tried plugging my PC into 2 other TVs that I have, and they weren't being recognized either (even though they had no problem being recognized by my laptop).

I tried removing the new RAM and restoring everything to how it was originally shipped to me, but that didn't work either.

I also heard what sounded like a loose screw sliding around underneath the motherboard, but I wasn't able to find it. It could have also simply been a loose cord of some sort that was making the noise.

When I first contacted CyberPower about my issue a few weeks ago, their support team theorized that the video card was the problem. They sent me a new one - which I successfully installed. Unfortunately, installing the new video card didn't solve the problem since my monitor still isn't being recognized (the monitor works perfectly fine with my laptop - so the PC itself is definitely the problem).

Also, I should note that the PC boots up perfectly fine since the RGB lighting turns on throughout the PC. I simply can't get my PC to recognize any of the monitors in my house for some bizarre reason.

What should I do next in order to fix this problem?

Thanks in advance for any helpful responses!

Bruce said:

you do not want a lose screw in a PC.
whatever you heard needs to be investigated, a cable would not make a similar noise to a screw,
one is coated in rubber, vinyl, or silicon and the other is metal on metal - two different noise profiles.
biggest danger in a lose cable is getting stuck in a fan, the screw however can cause a short (if it hasn't already).

the good news - stripping the PC to find the screw would be the first step in 'starting from scratch'.
that is - rebuilding the PC, with the original RAM and hell, throwing in a fresh install of Windows.

that way you unwind whatever process you went through that got you to the current situation.

and sadly, your PC is not booting up perfectly fine.... part of your POST cycle is failing hence no signal to the monitor.
the most likely cause would be the RAM, bad contact, gone bad, fried during the upgrade.... who knows.

if you want to try some shortcuts in the hope you get lucky, and assuming the screw has found a 'safe' spot to lodge in, you could try only running the rig with one of the original memory sticks. if that doesn't help, try the other stick by itself.
the original RAM is 3000Mhz, the new is 3200 - is that compatible with the motherboard?
something else to try is to strip out all non-essential components; optical drive, secondary storage, keyboard, mouse, only have 1 memory stick, the GPU - your aim is to get the PC booted to an image on the screen at this stage.

and yeah, run Speccy and post your complete PC specs.

Click to expand...

I tried most of your suggestions. I put the original RAM that came with the PC back in, I tried putting them in different slots, I tried only having one in and then the other, I tried taking the GPU out completely and plugging my monitor into the motherboard's built-in HMDI and Display Port, and I tried unplugging all of the external components besides the monitor. Unfortunately, nothing worked.

And as to finding the loose screw that seems to have lodged itself somewhere under the motherboard; I can't do that because I'd have to remove the liquid cooling system in order to remove the motherboard. And there's a big sticker on the body of the liquid cooling system telling me that my warranty is voided if it's removed - which I don't want to do because I'll probably be mailing it to their office for warranty repair work soon.

Thanks for trying to help though.