First, because it could be the monitor itself, swap in a known good monitor to test. Use a friend or family member's and see if it works. If the second monitor performs badly also and IF you have an integrated graphics card installed on the motherboard, try disabling the nVidia graphics card and enable the integrated card. (You'll have to plug the monitor cable into a different port in back.) The onboard graphics should work fine for the things you do with the computer.
If you don't have an integrated video card on the motherboard, then you're only option would be to swap in a good graphics card.
Hope this helps.
Grif
Last night my screen started flickering a little bit. barely noticable. It had done this once or twice before when I turned the screen on after it having been off for 12+ hours. However, this morning it started going crazy. I have a little video I took to show how it was this morning... although now it is WAY worse. When I hit the menu button on the screen itself, that part does NOT flicker even though the rest of the screen is.
https://www.youtube.com/watch?v=16fBl1NuvLQ <-- This is how it was this morning.
Does anyone know why this might be? Is my graphics card dying? I've checked all the connections to make sure they are tight. I've cleaned the dust out of the tower. I've made sure the most recent driver for the graphics card is installed (Nvidia GeForce9100). I've run Malware Bytes and quarantined anything it perceived as a threat. I've also done a system restore back to how the computer was on the 7th.
I am not sure what to do now. I'd really rather not have to get a new graphics card since I can't afford it... but if I have to, what is recommended? I don't play games. I just watch YouTube, surf sites like Reddit, use Adobe Premiere to make my own YouTube videos and use Paint Tool SAI to draw digital images.

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