so my N53SN fan mysteriously started vibrating one day.

replaced the whole fan unit for RM30 and
realised that it is so much better to clean the laptop and replace the fan unit.

now the idle temp over around 44-48'c and moderate usage 58'c
and the laptop is once again silent since i'm running ssd.

just a tip for those who wants to start afresh with your windows 10.
super quiet and like a new laptop once again.

btw those N53SN users here, u gotta change ur temp paste,
the stock paste caked up rock hard and I had to chip away with a flat screwdriver and a toothbrush 
signs that it is running efficient already.

diy..

took everything apart, clean and reassembled in 3 hours.
using only few flat heads (philips) and few cross heads screwdrivers, tissues and a brush.

ez work as there is a teardown of this model on youtube.

just only thing to be careful is the touchpad wire.
that was the only hard thing to take off and put back on.

long time or recently?

not much help i could give.

what laptop model u using?

Try to recall what happen before the problem start.
(lightning strike? lately have some thunder)

ur power brick got light?
(do a test current for the plug 1st)

Worse come to worse is just change the power management card inside the laptop.

cannot recommend shops since most diagnostics and repair diy

if warranty send back
if no warranty get quote.
if u dare, take small clips and bend back
if u dont dare, go online ebay find the power board for your laptop and change the part.

the power board very easy to change, and since u know the problem ardy, its just a quick fix.

u did say u got a i7 setup.

take into account a new i7 machine and gst, I would say if the current laptop power is enough, just repair.

i dont trust repair shops, cuz many occasions they fix and = not fix and still get charged.
i also dont know how can a loose port = chipset error  cheating perhaps.