The computer mainframe suddenly lost power.

Generally due to the following reasons:

1. The computer system is poisoned or infected with malicious software.

2, cpu fan is broken, cpu temperature is too high, overheating protection.

3. The power supply is broken, or new hardware is added, and the power supply is insufficient.

4. The video card or the video card fan is broken.

5. The motherboard is broken and the motherboard core is overheated.

Extended data:

Some points for attention when using a computer:

1, automatically link to some strange websites. Pay attention when surfing the internet, don't mess with things you don't understand, especially pornographic pictures and advertisements floating in some browser pages, and don't click on them; If it affects your browsing, please drag the slider up and down until you reach the best angle.

2. Don't download and install some small software or programs online.

3. Mail from strangers. Receive emails from strangers, especially those with attractive titles, such as a joke or a love letter with attachments.

4. Kill the virus before using the USB flash drive, and regularly check the system for viruses with anti-virus software.

References:

Baidu baike computer