R Pi3 boots but does not respond and act light doesn't blink

[Gpai]

I recently bought a pi3 and did all needed requirements and started it up, after two days when I was using the net it started glitching slightly, so I switched it off and then when I started it again it booted right up but it was not responding and the green light was not blinking.there was also a lightning symbol on the right hand top corner of the screen.i am afraid that I might have damaged it while handling.. Plz help..

[DougieLawson]

The lightning symbol means your power supply isn't good enough.

Try with a power supply that can deliver a steady 5V @ 2.4A.

[Gpai]

But then shouldn't it just turn off? And I have run it for two days one a one amp adapter, then it worked just fine..

[drgeoff]

But then shouldn't it just turn off? And I have run it for two days one a one amp adapter, then it worked just fine..

Yours is not to question why, yours is but to do and try as Dougie says. (With apologies to Tennyson!)

[fruitoftheloom]

But then shouldn't it just turn off? And I have run it for two days one a one amp adapter, then it worked just fine..

The RPi has circuitry to show undervoltage, it is likely the Power Supply has been working overtime trying to supply adequate voltage and may be failing ??

https://www.raspberrypi.org/help/faqs/#power

[kusti8]

But then shouldn't it just turn off? And I have run it for two days one a one amp adapter, then it worked just fine..

Some things may not work and as you try more intensive programs or add things to the USB, it will get unstable and not enough power will be gotten. It doesn't shut off if there isn't enough, it'll just behave erratically.