what about if always power off and restart the pc without following procedure (just switch off main power).

how do u know its heat problem? what temp is normal?

i think should add another one.

Using parallel HDD cooler fan. coz can block breather hole.

if we send RMA do they repair the broken parts or do they just give out new unit? and also im wondering how do the recovery services company do their job?? are they doing it physically?? how is that possible?