My screen colors got inverted(showing in negative colors)

[vinay kondabathula]

Few days ago, suddenly I saw my laptop screen colors got inverted. It is showing in negative colors. I checked all the settings if I turned on any inverted color option but everything is set off. Inverted colors are showing from boot up of the system. So I thought its graphic card driver issue. So I tried updating it but still it is same. What is the issue? I need help

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