Recently replaced my 13 yr old tv/ computer monitor with a new samsung curved monitor. Was running a duel monitor set up with two old tvs, decided to upgrade to actual monitors. On the 13 yr old tv, the screen would occasionally go slightly blurry and it'd be hard to read. The second monitor didn't really have any issues. Upgraded both to the new monitors, no issues for a week but turned it on today and one screen is blurry and the other is okay. Google search said to play with resolution size, sharpness etc.. but not sure if it might be a graphics card issue. How do I test this without investing in a new graphics card? It's an msi geforce gtx 760