1. General tips
1.1. Write down your steps, this will make it easier to remember exactly what you have done and avoid repeating the same mistakes.
1.1.1. Take notes on error messages, be sure to write down as much information as possible.
1.1.1.1. Check the cables and restart the computer
2. Common problems
2.1. Power button will not start compute
2.1.1. An application is running slowly
2.1.1.1. An application is frozen
2.1.1.1.1. All programs on the computer run slowly
3. General solutions
3.1. Internet connection issues: Make sure you're connected to a Wi-Fi or Ethernet network, check your network settings, and restart your modem and router if necessary.
3.1.1. Software problems: Try reinstalling the program or application that is causing the problem, check for available updates, scan your computer for viruses or malware, and restore your system to a previous point.
3.1.1.1. Hardware problems: Check if cables are connected correctly, make sure components are installed correctly, perform hardware diagnostics, and replace any faulty components.
3.1.1.1.1. Security issues: Install antivirus and antispyware software, make sure your operating system and programs are up to date, don't download files from unknown sources, and don't share personal information online.