What's happening to my screen (image included)?

After looking up what 'degauss' means, I haven't got that option on my monitor - mine's a flat screen LCD monitor (albeit pretty old now), so apparently it shouldn't need 'degaussing'

Sorry to bump this up, but does anyone have any ideas as to why it's doing this to a flatscreen monitor? I don't have anything magnetic nearby that could cause this (if that might've been the case)?

Hi guys, here's a video of it occuring if this helps - available for 7 days from now:
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Could someone at least tell me what it's called when it does this so I can Google it myself (if no-one posts a solution here)?

All I can say is, try a different monitor. Try that monitor on another system. Use a different interface (HDMI instead of DVI, or something similar).

Degausing was a thing when everyone had CRTs because magnets were steering the beams that created your picture. Of course, having magnets in your monitor made the picture tube susceptible to magnetic field variations and the like, necessitating degausing.

Due to the fact that LCD monitors don't have tubes, there is no problem with magnetic fields anymore.

Thanks a lot for your advice everyone. :) I'm definitely more glad it's not the graphics card that's on its way out.

As I don't have that much money to spend, I'll go and have a look for a new one when this one finally bites the dust.