I've been having an issue with Steams UI and I don't know how to fix it. Whenever it opens after I turn on my pc, the entire screen shows off this horizontal green, red, and yellow gradient. First I tried disabling, reenabling the hardware accelerators and restarting the pc (since I read that it helped for some people on Reddit) but it did nothing. Then I tried uninstalling steam and reinstalling it; not only did that not help but the login UI is shows the same gradient as the one in Steam's menu. I also installed the latest update for windows, reset my gpu with "windows+Lshift+Lctrl+b", uninstalled and reinstalled my gpu drivers but it all did nothing to get rid of the gradient.

Also, my pc is very old. I bought it back in 2017 as a prebuilt so it may be on its last legs. But I want to know how to get rid of this before I blow money on another pc.