Lenovo computer black screen after selecting USB drive to start

Recently, some netizens encountered a situation where the system started normally after turning on the Lenovo Savior laptop, but the screen went black.

This situation is caused by refresh rate overclocking. In the past era of CRT monitors, users could adjust the refresh rate of the screen because its light emitting principle was different from that of LCD monitors. However, with the popularity of LCD/LED displays, the refresh rate of the screen has been fixed, and this problem no longer occurs. Therefore, this issue has become a thing of the past.

In the past two years, with the advancement of technology and the increasing requirements for hardware performance of large-scale games, high-refresh LCD screens have appeared. The refresh rate of this kind of screen can reach higher values, usually 90Hz, 120Hz or even higher. This increase in refresh rate is to solve the problem that occurs when the graphics card outputs a high frame rate in the game and the display only has the traditional 60Hz. Taking a traditional 60Hz display as an example, if the frame rate output by the graphics card exceeds 60 frames per second, part of the game screen will be discarded as invalid frames within 1 second. The higher the frame rate, the more frames are dropped, which is equivalent to wasting the gaming power of the graphics card. And if the refresh rate of the display can match the number of frames output by the graphics card, the game screen will be smoother. Therefore, the emergence of high-refresh LCD screens can give full play to the performance of graphics cards and reduce game screens.

The problem of Lenovo gaming notebook refresh rate overclocking and black screen may be due to immature quality or high-refresh screen technology.

So how should we solve this problem?

After turning on the computer, press the power button without letting go, and then force the computer to shut down. Do this three times.

The computer will enter repair mode, select Troubleshoot.

Click Advanced Options in Troubleshooter.

Click Startup Settings in the advanced options.

Click Restart in the lower right corner of the startup settings.

After restarting, select "3) Enable low-resolution video" in the startup options to enter the system.

After entering the system, find Settings - Display - Advanced Display.

Just lower the refresh rate.

If you are not playing games, it is recommended to lower the refresh rate by one level, because the refresh rate of the screen is how many times the screen updates the display information per second. The higher the refresh rate, the smoother the game, and the higher the relative energy consumption, which will consume more power when using the battery.

High refresh rate screens have to update the displayed images more times every second, and their service life will also be relatively reduced.

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