The last one is the CPU vacated by the system. The larger this number, the smaller the CPU utilization rate used by the system.

Spoolsv.exe is the process of printer processing. If the printer is not connected, you can turn it off.

WgaTray.exe, it is your computer that downloads and updates, and it will remind you of the process of system piracy when it is turned on.

In addition, Reminder.exe, TXPlatform.exe, KWatch.EXE, KPfwSvc.EXE, VMSTI.EXE, kMaiMom.EXE, GoogleToolbar.exe and KISSvc.EXE have safe trays. Exe is also an unnecessary process and can be closed.