have a look in prefmon for any processes that are giving load to the CPU.
wdfmgr is a bastard for that. You can get machines sitting at 60% cpu load for ever and that over heats the processors. If you kill it the cpu load will drop down to about 10 again if you are doing nothing and the temp will drop quite quickly.
Its a prosess which arrives with a western digital external drive and seems to be a particualrly crap bit of software.