What does it mean when XJCIientkoal appears on the computer desktop?

This means that the file is corrupted and you will have to reinstall or repair it.

I also have this box in my office computer, and I found an unfamiliar "Huada CSP tool" electronic certificate authentication program, I don't know who installed it, and there was no box immediately after uninstalling. You can see if there is a similar program in the computer, and if you want to use it, go to re-** the certificate, and uninstall it decisively if you don't use it!

F1 displays the help content of the current program or Windows.

f2 When you select a file, it means "rename".

F3 opens the "Find: All Files" dialog box when you're on the desktop.

If your case is premium, you shouldn't have any problems.

When you want a bargain.

Then it's better not to put it on it.

It's too decisive to say no, but you don't have to be that kind of high-power person, it's okay in general, there's no problem, don't worry.

Remote resolved.

After adjusting the resolution, the size of the white space on both sides can be resolved.

You can set it up in IE. You can choose the size of the text in the view.

There should be three wires, a fiber optic line traffic inlet, a network cable output port, a power cable, the optical fiber interface is not the same as your home interface, so you need a cat to convert, the computer can't be directly plugged into the fiber optic cable, so the computer can't be used normally after unplugging.

There are two wires on the cat: one is the power cable, and the other is the network cable, which is used to transmit data. After unplugging it, you can't transfer data, which means it can't work.

Generally speaking, there must be at least one cable on the optical modem, and it is the optical fiber cable that the signal comes in!

If there is no signal (data) coming in, there will definitely be no signal going out!

If you're a wireless router, it's the same thing, unless you do a bridge! The wireless router also needs to receive the signal from the optical modem, and there is a WAN port on it to access, and any LAN port is connected out!

You also need a wireless network card on your computer to use the wireless signal, otherwise you need a wired connection to the network port of the computer!

Otherwise, there is no signal on both sides of the optical modem, and this optical modem must be an ornament, which cannot be used!

The cat is home fiber access, and then access the route, it is impossible to have only one network cable access route, where is the home fiber broadband access,

It should be a light modem. But I've never seen such a big one, and our light cats here are very small, as big as you.

Of course, you can use it if you unplug the computer, but you may not be able to access the Internet.

If you have access to the internet, then it is estimated to be a useless or old router.

There is no back interface** can not tell what kind of device this is, that is, it is connected to a network cable, indicating that it is a network device. The computer can run normally without network equipment, but it can't connect to the network and can't access the Internet.

Generally speaking, there must be at least one incoming line on the optical modem, so that the signal can be received by the optical modem, the incoming line is generally optical fiber, and the line that goes out is a network cable, which can be connected to a computer or TV.

The cat box, the scientific name modem, should be three wires on it: power supply, network cable, optical fiber (from telecommunications), no power supply will not work, optical signals can not be converted into network signals, and the computer will have no network.

If which, the black is the power cord, the blue is the network cable, the reason why the computer can be used normally, because your computer may be a laptop, can accept wireless signals, so it can be used normally.

The cat is equivalent to the mobile phone card in the mobile phone, and the computer can be used normally if the network cable is unplugged, but there is no network connection, and it can't be connected to the Internet.

The blue one is the data cable between the cat and the router, and if you unplug the router, there will be no network.

It's a bit like a set-top box, only one picture is not quite sure. You can take a look at the specific model on the back of the device and check it online.

You must have broadband access to the Internet. Then you can use broadband Internet access or wireless routing to access the Internet.

It should be a network TV box,If it's an optical cat,You can't get on the network when you unplug the computer,Maybe it's just a box,One end is connected to the route,This end is connected to the TV through the box。

This is a set-top box.

Unplugged,The set-top box function can't be used,This set-top box is generally used to watch network TV。

I can't tell exactly what the box is.

It is recommended to go to a computer repair shop to find a professional person to introduce you to the system hardware configuration and give you a professional answer.

The gray interface provides a line insertion port for telecommunications; The yellow connector is the output port, which is the interface used to connect to the Internet such as computers or televisions. As shown in the picture above.

1 The computer should be kept in a clean room. Dust can adversely affect almost all parts of a computer, shortening its lifespan or affecting its performance.

2 The computer should be placed in a spacious space, and the heat dissipation space should be reserved around it, and it should not be mixed with other sundries.

3 Magnetic fields are strictly forbidden around the computer. Magnetic fields can have a serious impact on displays, disks, etc. Try not to place the speaker near the monitor, and do not place the disk on top of the speaker.

4 Do not place a teacup on the computer desk, let alone place it on the main unit, monitor, or keyboard, once the water is spilled, the consequences will be serious.

5 Do not move the main chassis or expose it to shock and vibration when the computer is working, which is a very dangerous action for the hard disk.

6 The hard disk should not be suddenly shut down or powered off when the disk is being read. If the voltage is unstable or there are frequent power outages, you can buy UPS to deal with it.

7. In the case of a dry environment, you should beware of the influence of static on computer accessories. If you need to make direct contact with the circuit board, please first discharge yourself (e.g., touch the water pipes with your hands, etc.) or take other insulation measures (e.g., wear grounding gloves).

8 Do not plug and unplug various accessories or interfaces in the power-on state (except for devices that support hot swapping), otherwise, it may cause serious consequences of burning the relevant chips or circuit boards.

9. Dust the power supply, optical drive, floppy drive, chassis interior, monitor, keyboard, mouse, etc. should be cleaned regularly. If it is not convenient to deal with it yourself, you can ask a professional to do it. However, you should know that there is a high-voltage circuit inside the display, so you should not act recklessly.

10 Do not wipe the monitor screen with alcohol or laundry detergent, you can use clean water if necessary, but the water must be adsorbed on a paper towel or rag, and do not allow clean water to flow into any accessories.

11 Do not turn on and off frequently, and turn on and off the machine at a time of a few moments.

12 Do not mix conductive bodies such as screws into the chassis, otherwise it is very easy to cause a short circuit of the board in the chassis, which will cause serious consequences.

13 Keep the driver CD-ROMs and manuals of various computer boards and peripherals, especially the motherboard manuals.

14 Do not use the optical drive for a long time, such as listening to songs, watching DVDs, etc. You can copy songs, DVDs, etc. to your hard drive to enjoy them.

15 If the computer is not used for a long time, it is recommended that you turn it on and run it regularly to expel the moisture in it.

Hello. In fact, both novices and veterans are.

A process of continuous learning and continuous improvement. The main thing is that you have to comprehend it with your heart. Keep trying.

Have time to surf the Internet more and learn about the dynamics of new computer technologies at multiple points. It is also recommended that you go to a few forums with more people, where you can find a lot of useful things for you. Here are a few of the places I frequent:

I hope you can have a happy IT life.