To set the core number of processors needed to boot the system, because the Win7 system starts by default with a processor core, we can increase its number. Click the Start menu to run, and if not, you can win+r the keyboard key combination.
Then enter Msconfig in the Run box and click OK to open (we started with a lot of startup settings here).
Click on "Boot"--"advanced options", and you can see that the checkbox before "processor Count" is not selected by default. We use the mouse to select it, as shown in the picture, and then click on the menu below, your processor is a few cores will display a number of digits, such as my processor is dual-core, on the display 2, and then we choose 2, Click OK to exit.
Now start setting up the startup item, too many startup items are causing the system to start slow to the culprit, so be sure to reduce the number of startup items, I suggest that in addition to antivirus software, all the other cancellation automatically start, some commonly used software you can wait for the system to start and then open, at least we do not have to endure the torture of slow As the figure shows, all of the startup items are selected before you can see which one you want to start automatically.
Deselect all the startup items except the antivirus software and click OK to exit.