When you say the computer screen is black, do you mean that the computer is powered off and shut down?
Computers are very sensitive to voltage response
So the voltage regulator provided for the computer must be dedicated to the computer
I guess your voltage situation is not good. , low and with large fluctuations
Generally, voltage regulators on the market need to switch to adjust the output voltage when the voltage fluctuates greatly
And there will be a microsecond during this adjustment process Level power outage
This power outage interval cannot be felt for electrical appliances such as air conditioners, but it is a bit fatal for computers
If this is your situation, you Need to replace a computer-specific voltage regulator
Recommended Huineng brand TMJ or ITJ series, computer-specific ones
Effectively ensure that the computer does not crash or shut down due to unstable voltage. Restart
Produced by Quzhou Sanyuan Huineng Electronics Co., Ltd., which has the best technology in the household voltage regulator industry
It has several brands such as HN, Huineng, and 001
Products from big manufacturers are trustworthy