Khởi động lại máy tính nếu gặp vấn đề. Reset mạng nếu bạn không thể kết nối Internet. Kiểm tra đồng hồ của máy tính. Khởi động lại máy in nếu bạn không thể kết nối với máy in.

Given the above summary, write a detailed text in English for it.
This may sound like a simple suggestion, but rebooting your computer will solve more problems than you may think. Make sure to save any open documents before rebooting. If you could visit websites, and now you can't, try rebooting your network hardware. This will often fix connection problems with modems and routers.  Unplug the power cable from your modem, and unplug the power cable from your router (if you have one). Wait about thirty seconds, then plug your modem back in. After the lights on your modem have finished turning on, plug your router back in. Your network should be up and running again in about a minute. if your system clock somehow got set incorrectly, you may not be able to load security certificates from websites. This can cause problems loading many webpages. Check your system clock and set it to the correct time. If your printer is no longer appearing, rebooting it may get it to show up again. Either turn the printer off with the Power button or pull the power cord out. Wait about thirty seconds, then power it back on.