The upper right corner of the computer malfunction shows how to exit with the word j

The monitor power cord is not in good contact.

There are two kinds of common fault detection, first, hardware failure. Second, software glitches. Listen to the alarm sound One long and two short is a problem with the memory One long and a few short is a problem with the graphics card If there is no alarm sound, the fan turns to the source slag, and the screen is not displayed, it means that there is a problem with the CPU None of the above situations, and the system self-test is also successful, that is, there is a problem with the operating system or the hard disk is broken, if the self-test is not successful,

Did you just reinstall the system with PE, or replace it with a new hard drive? If so, you can click on the 4K option when the PE tool partitions, and re-divide the lower area, the old motherboard does not support 4K alignment.

Analysis: That's because you turned on the numeric lock key, just turn it off.

Processing: Press fn+numlk at the same time as shown in the figure below.

It's best to buy an external keyboard so you don't need any setup.

Problem analysis: The letters on the laptop keyboard turn into numbers because the number lock key is turned on. If you need a letter that is keyed with a number, you need to turn off the number lock key.

Solution: 1. The numeric lock key of the notebook keyboard is generally: fn+numlock numeric lock key, which means that it is open and the corresponding indicator light will be lit when pressed. Press it again, it will turn off and the indicator light will turn off.

2. The solution of the notebook keyboard is actually very simple, but due to the different designs of various types of notebooks of notebook manufacturers, the way to turn off and open the numeric keypad is also different, but almost all of them are fn key + numeric lock key, or shift key + numeric lock key.

HP DV Series FN+NUMLOCK key (num and scroll on the same key)

HP Compaq CQ Series FN+SCROLL key (the key after F12).

Dell Inspiron Series FN+F4 (there is a small lock in the lower right corner of the F4 key icon, and there is a number 9 in the lock, which is the Num key).

Dell Vostro Series FN+Numlock key.

IBM Shift+NumLock.

Lenovo ThinkPad Series FN+ NMLK Scroll key (top right, two functions together)

Lenovo Sunburst C series FN+ NMLK bond.

Lenovo Y series FN+ NMLK bond.

Acer D series FN+F11 keys.

Due to the large number of notebook models, the method of closing the keypad is slightly different, so I can't list all the methods here, but the methods are all similar, and you need to find the numlock key first.

If it's not sticky due to water ingress, you can switch between the function keys fn and num keys and give it a try. It's a notebook.

It's very simple, press and hold fn + ins num lk for the laptop.

That's not called chaos, it's that you turned on the numpad mode. Hold down the Fn key and then press the Numlk or Numlock key to turn off keypad mode.

Press the fn key on the keyboard with one finger and the num key with the other finger.

Num Lock, plug in an external keyboard and click Num Lock

If it's a laptop, press and hold the FN and Capslock keys. Try it.

You've connected the keyboard to use it.

It's a problem with the hard disk, and I solved it like this: (Mine is a new hard disk, and this phenomenon occurs after booting and installing the system with a USB drive on the netbook.) ）

Press the hard drive on another desktop, boot the hard disk directly with the disc boot (do not enter the PE partition), and then reinstall the system and everything is fine.

You can try it this way!

If you have data on the old hard disk, you can copy the data on another machine first, and then follow the above method.

There is a problem with the hardware settings, or there is a quality problem with the hardware, or the hardware is not in good contact.

If you have a problem with the hardware settings, clear the BIOS settings and try it.

Are you sure you only show a letter j instead of a string?

Let's see if we can enter safe mode first.

The display is set by you. It's a bit hard to describe. You open the monitor's settings, and there's a brightness that disables it.

If our computer is unfortunately hit by a black screen Trojan, how can we fix it? There are two ways:

1. Restore the shell value of winlogon to the registry to;

2. Or with the help of security software, repair the system failure while thoroughly cleaning up the "black screen" Trojan.

If the system is damaged, just reinstall it.