Anomaly in selecting and typing

[Guest Majithiya Drishti]

Hello, when ever i open my laptop( Dell Inspiron windows 10 (64) ) the 1st icon remain selected and every time i click on something else, 1st icon open. it seems like mouse pad is stuck or something. it happens with pdf or webpages too, it get stuck at the top, even if i forcibly try to scroll down it goes up. It started happening few days back in morning I opened and working normally but when I open it in evening suddenly it start to show me this kind of anomaly and also when I type something in text box it types on left side from the starting point (backward).I can't understand what is go

 

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