HP OMEN making Noise and Mouse click does not respond instantly

[BRNI]

I have HP OMEN laptop purchased very recently. It was fine until past week ,

1, lots of noise coming from the machine and

2. also when i open the browser and if it has been idle for some time, to get back the cursor takes a long time as if cursor is stuck. 

3. Also In the task bar CPU and Memory usage is 60% always even when i am not running any applications. 

4. Even network seems to be fine there is a lag in network connectivity. 

5. Also HP OMEN command center throws application handle error frequently.

Please help. Please let me know what kind of details you may require. 

[BRNI]

I have not given my product id etc.. as i wanted to make sure that i am communicating with an authentic HP person. Thanks for your help.