My laptop presario cq42 too noisy sound come out like fan sound non stop

Can you help how to solve this problem. Normally my laptop is too noisy for fan sound

Please try getting the heatsink clean if the noise has started after using the product for sometime and possiblity of dust blockiing the vent area. here is the link.
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c01657439
also, consider updating the BIOS for your computer from http://www8.hp.com/in/en/support-drivers.html
hope it helps.
Regards,
WW
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