To properly shut down your PC, follow these steps:

1. Save all of your work and close any open programs.
2. Click the Start button and then select Power > Shut down.
3. Wait for your PC to shut down completely.

If your PC is frozen or unresponsive, you can force it to shut down by pressing and holding the power button for 5-10 seconds. However, this should be avoided whenever possible, as it can cause data loss or corruption.

Here are some additional tips for properly shutting down your PC:

• If you are using a laptop, make sure that it is plugged in to a power outlet before shutting it down.
• If you are using a desktop PC, make sure that all of your peripherals, such as your monitor, printer, and scanner, are turned off before shutting down the PC.
• If you are expecting to be away from your PC for an extended period of time, you can put it into sleep mode or hibernate mode instead of shutting it down completely. This will save power and allow you to quickly resume your work when you return.