Hi guys.
I've an old (+7 years) medion tower PC that functions primarily as a server for streaming my plex stuff to my smart TV upstairs.
A few years ago, I got a BSOD, figured it was a graphics card issue and replaced it with a Nvidia cheapy one.
All was fine..
But recently, If I use it to watch any content directly - Plex, media player, streaming services etc, it will intermittently fall over and give me a kernel driver error.
Worst case, it freezes and I have to hard reboot.

I'm running a very clean, recent install of Win 7 and after a lot of research I believe I'm using the most stable driver version, for win7 and my graphics card.

Would replacing the graphics card fix it?
I'm using a 40" sammy, via HDMI as a monitor, would that cause any issues?

Appreciate the help