Strange box in corner of monitor

Have you tried performing a quick power cycle? If not, turn off the console and then unplug all the cables. After 2 to 3 minutes, re-plug them back again, then restart your console.

That's strange as the Samsung Odyssey G5 monitors aren't 4K monitors....it does, however, have HDR10, so I wonder if the Xbox is getting confused.

On reading around, it seems, from what I understand, that HDR is locked to 4k. Is there a box labelled "allow 4k" and is it ticked? If so, try unticking it and see what happens. The other option is to turn off HDR and see if that helps

Im not having that much of an issue i realized last night i turned on my x1 and can see 1 white pixel at the bottom right corner of my tv but only at the home screen if i go into other things or into games its not there dont do it on my cable box just on
the home menu real strange...

hmm very strange, i used the same monitor a while back and worked fine on the xbox, could be setting on your monitor?

That's strange, may I ask what model of TV and monitor you're using?