|You shouldn't be holding the button to turn the system on or off. I suggest you stop doing it. If it takes a long time to bootup or shutdown, it's either because you have too much sh!t loading in the background, you have too little RAM, or both. It would help if you'd post your system specs.|
Press Ctrl+Alt+Del to bring up Task Manager - in the lower left of the Window, what is the number of processes? Leave Task Manager open, make sure it's on the Processes tab, then click on "User Name" at the top of the column. This will rearrange the processes. You may have to click twice to bring your name to the top. You should be able to identify every process associated with your user name, if you can't, post what they are.
You should also install CCleaner-Slim & use it regularly: