Why do I have to turn on the monitor first and then the host when I turn on the computer?

Peripherals (such as printers, scanners, UPS power supplies, modems, etc.), if the display power supply is not connected to the host, turn on the monitor power first, and then turn on the host; The shutdown sequence is reversed: the host is turned off first, and then the peripherals are turned off. The reason for this is to minimize damage to the host.

Because when the host is powered on, the moment the peripherals are turned off, a strong inrush current will be generated on the host. For a period of time after the shutdown, it cannot be turned on and off frequently, because this will have a great impact on the accessories, especially the damage to the hard disk. Generally, the time before the next power on should be at least 10 seconds after power off.

Pay special attention to avoid shutting down the computer when it is working. For example, if the computer suddenly shuts down while reading and writing data, it is likely to damage the drive (hard disk, floppy drive, etc.); It is also not possible to move the machine when the machine is working normally.

When shutting down, you should pay attention to quitting the Windows operating system first, closing all programs, and then exiting in the normal shutdown order, otherwise the application may be damaged. Of course, even when the machine is not working, you should try to avoid moving the computer, because excessive vibration can cause damage to accessories such as hard disks and motherboards.

When the computer is turned on, the monitor should be turned on first and then the host should be turned on, and the host should be turned off and then the monitor should be turned off when the computer is turned off, this opening and shutting down sequence is particularly important for the old monitor, but it is not very important for the display produced in recent years, and even some monitors are in the opposite order when they are turned on, but in most cases it is beneficial and harmless to use the above order.

Turn on the monitor first because when you press the power switch of the case, some hardware and system information will be displayed on the screen, as well as self-test information. If you power on the host computer first and then turn on the monitor, then some of the previous information may be skipped, and you won't be able to see it. Therefore, in order to be able to see all the boot information, you must turn on the monitor first and then turn on the power of the host.

We don't usually pay much attention to those messages, so it's nothing to turn on the phone first. If there is only a problem with the system or hardware and you need to find some related causes, then the self-test information on boot is very important.

So you don't need to care too much about which one to turn on first.

In the past, the principle for computers was to turn on external devices (monitors, printers, etc.) first, and then turn on the main unit.

Because the hardware technology and operating system at that time were not perfect, the display at that time was powered by the main computer, if the main computer was turned on first and then the display, the high voltage of the circuit at the moment of opening the display may burn the power supply or the motherboard.

But now the hardware and software technology has been quite perfect, it doesn't matter what you turn on first, and even you can turn off the display at any time to save power, and if you use an LCD monitor, then you should turn off the power of the display when not in use, in order to prolong the service life.

Xuanmao - Tanhua Level 11 9-20 21:12

There are two types of boots: cold start and hot start.

Cold start turns on the monitor first, then turns on the console, and turns it off the other way around!

Hot start turns on the console first, then the monitor!

Cold start is that you haven't turned on the computer for n hours, and now you want to use this way!

The hot start was just turned off not long ago, and now I want to use it this way!

As for why you do this, it's not something that can be explained clearly in one or two sentences, if you want to know what the reason is, you can check it on the Internet, and the online explanation is more detailed!

This is because the power of the monitor is large, and the instantaneous current generated when the monitor is turned on is large. When turning on the monitor, turn on the monitor first and then turn on the host, the instantaneous current will have less impact on the host, and vice versa, it will have a greater impact on the host. The same is true for the latter.

The data cable of the monitor is directly connected to the motherboard of the computer, and if you turn on the computer first and then turn on the monitor, you will be shocked by the high-voltage data of the monitor. Use COMS to set zero. Or damage the motherboard!!

This is to protect the CPU.

Because CPUs are expensive and fragile, they are more likely to burn out when the current is too high. We know when the current is at its highest in an appliance, and that is at the moment of turning on and off. The high voltage generated at the moment of switching can break the CPU. If you use it, turn on the monitor first to alleviate it.

Is it the Dongdong precision or the display in the host?,Who do you say can withstand the impact of the current better? In order to protect the more delicate parts, the display can only be sacrificed.

Not necessarily! It's just better to do this, otherwise it will shorten the life of the display! (There will also be leakage of electricity!) ）