This morning, my monitor was working perfectly fine. This afternoon, after leaving it on all day, I returned to find it... odd. Colours are displayed incorrectly, making everything look dark and blotchy. The Lagom calibration test shows the problem well, even with the crappy iphone camera:

Additionally, the display now has a HUGE ghosting problem. Anything with a high contrast (e.g. a white text box on a black page) will still show for a significant amount of time afterwards (several minutes at least).
My monitor is a HP l2335 (S-IPS panel).I've tried swapping GPU ports and using different cables (VGA and DVI), running a factory reset. but nothing makes a difference, so the problem is almost certainly on the monitor end.
Is this a case of "Your screen's dead, enjoy spending £200 on a new one", or is this fixable?

Additionally, the display now has a HUGE ghosting problem. Anything with a high contrast (e.g. a white text box on a black page) will still show for a significant amount of time afterwards (several minutes at least).
My monitor is a HP l2335 (S-IPS panel).I've tried swapping GPU ports and using different cables (VGA and DVI), running a factory reset. but nothing makes a difference, so the problem is almost certainly on the monitor end.
Is this a case of "Your screen's dead, enjoy spending £200 on a new one", or is this fixable?