Speccy doesn't start in taskbar on Windows 10 x64 to show the CPU temp.
All options are checked but it starts in full screen when Window 10 x64 starts.
No problem with Windows 7 x64, only with Windows 10 x64.
I'm having the same issue with Win 7 Pro x64 running on a Lenovo T410. Notwithstanding configuring Speccy to run minimized in the systray when Windows starts it runs full screen.