thermal problem Dell SXPS 1645

B

i have a 3 year old dell sxps1645
i've been experiencing thermal shutdown while gaming on the system
i've used cooling pads. they generally work for a month or so and then start giving the same problem
so i started gaming while removing the back lid of the laptop for better air flow
the laptop worked without a hitch for 2-3 months but again started to shutdown due to overheating
is dust the culprit ?
or should i put on a new thermal solution as its quite old.
the average temp is around 55*C and gaming takes it to 88*C
im assuming shutdown occurs @94*C
please suggest a solution.
and yeah its out of warranty

yes. Dust is the culprit. Take it to a service centre and get it cleaned. Most laptops accumalate dust in huge proportions in the interior of lappy. So cleaning would definitely help.

B

seems like dust was the culprit
cleared the inner parts removed some ancient dust from the vents and fan around the heatsink
now max temp goes 65*C