the windows image lenovo uses sucks. The first thing i do with new lenovo laptops is reinstall windows. fixex a lot of these weird issues
if reinstalling windows doesnt help RMA the laptop
is the radiator installes with the tubing coming out of the bottom? if not, turn it around. This way any air will go to the top of the radiator instead of being stuck in the pump/tubing.
your psu is perfectly fine.
the only thing i'd change in this list is the HDD. i had 3 of them fail within 1.5 years. the toshiba DT01ACA200(2TB) and DT01ACA300(3TB) drives are good and reliable