The display is splashed or reboots for no reason5

I think it's a memory problem, and the long alarm is also a memory alarm.

It is recommended that lz detect the memory memtest This tool is better, if you don't know how to use it, just change the memory.

Besides, the fault that lz said can cause the memory to be bad, and the graphics card is not a long alarm, but a long and three short.

The alarm that will not be caused by the problem of the CPU fan is not a long sound, and the general CPU fan alarm will be displayed when the main version is self-checked, and the CPU fan is normal, and there will generally be no blurred screen.

The blurred screen for no reason means that there is a problem with the graphics card, but it is an integrated graphics card, so it is likely that the memory is aging and the speed cannot keep up, so it is easy to explain with a long beep when restarting!

Upgrade the graphics card driver.

Then turn the monitor to 85 Hz.

Hardware. cpu

Rebooting is sometimes a fan thing.

The display screen can first be detected in the following order: 1. Check whether the connection between the display and the graphics card is loose. Caused by poor contact"Clutter"、"Noise"Blurred screens are the most common phenomenon.

2. Check whether the graphics card is overclocked. If the graphics card is overclocked, irregular and intermittent horizontal stripes will generally appear. In this case, the overclocking amplitude should be reduced appropriately.

Note that the first thing to do is to reduce the memory frequency. 3. Check the quality of the graphics card. If the screen is blurred after replacing the graphics card, and it fails to work after use, you should check whether the anti-electromagnetic interference and electromagnetic shielding quality of the graphics card are passable.

The specific method is: keep some parts that may cause electromagnetic interference away from the graphics card installation (such as hard disks) as far as possible, and then see if the blurred screen disappears. If you are sure that the electromagnetic shielding function of the graphics card is not up to standard, you should replace the graphics card or make your own shielding cover.

4. Check whether the resolution or refresh rate of the monitor is set too high. The resolution of the LCD display is generally lower than that of the CRT display, and if it exceeds the best resolution recommended by the manufacturer, there is a possibility that the screen will be blurred. 5. Check whether an incompatible graphics driver is installed.

This situation is generally easy to overlook, as graphics card drivers are being updated faster and faster (especially for NVIDIA graphics cards), and some users are always eager to install the latest version of the driver. In fact, some of the latest drivers are either beta versions or optimized versions for a specific graphics card or game, and using these drivers can sometimes lead to blurred screens. Therefore, it is recommended that you try to use Microsoft-certified drivers, and it is best to use the drivers provided by the graphics card manufacturer.

This answer applies to most computer models such as the Dell G15.