Yes its Windows 10 home. He is trying to find his activation key so it's not like a "genuine" copy. But it was installed from a genuine windows 10 usb stick. And yes it's actually the local driver I believe. The version windows installs. Just not the most recent driver. It's been over an hour of gaming and it still is working.If that IS the correct monitor - it has HDMI, DisplayPort, and Dual-link DVI-D. The last 2 support 144hz.
Are you running Windows 10? Is the old driver compatible with Windows 10?
It'll reset every time you update the graphics drivers though.