What should I do if English letters appear when I turn on the computer and the computer cannot be turned on?

English letters appear when the computer is turned on but cannot be turned on because there is a hardware problem, such as hard drive failure, power failure, etc. The startup item settings are incorrect, which may be caused by incorrect startup item settings or virus infection. The operating system is damaged. There may be errors when installing the system or problems with the hardware during use. If you want to know more about the computer not turning on, you can read the article below this topic.