1 Copper

Noise from Inspiron 15 R

hello , 

 I am using Dell Inspiron 15R  notebook,  I installed windows 8 to it long time back. But recently (today), when i was starting my note book, i heard a strange noise while it is showing bios page and it lasts for long time.  And during the regular usage of notebook it is appeared  very often.I read some articles from Solution station. my problem may stated as bios or problem with fan. And  i tried to rectify that by updating the bios but i still face the problem while starting or streaming some videos etc..

Could any one tell me what the problem is and  how to rectify it?

Thank you !!!