What should I do if my Redmi phone can t be turned on and can t connect to the computer after flashi

Summary. What should I do if my Redmi computer won't turn on? 1. Restart the computer in the current state press the host restart button to restart the computer, if there is no longer an error prompt and can enter the system operation normally, it means that the last abnormal is only an occasional program or system running error, it does not matter.

2. Fix the error If you frequently can't enter the system normally, press F8 immediately after booting to see if you can enter the safe mode or configure the correct mode for the last time, if you can, the registry will be automatically repaired after entering, and recall what operations were done when the first few abnormal phenomena occurred, and according to the suspicion that a certain application software caused the problem, uninstall it, and then exit normally, and then restart it should be able to enter the normal mode. If you have security software, you can use 360 Security Guard, 360 Antivirus, Kingsoft Antivirus and other security software in safe mode to check and kill Trojans and viruses. 3. Reinstall the system If the above operations are invalid, you need to reinstall the system.

What should I do if my Redmi computer won't turn on? 1. Restart the computer in the current state press the host restart button to restart the computer, if there is no longer an error prompt and can enter the system operation normally, it means that the last abnormal is only an occasional program or system running error, it does not matter. 2. Fix the error If you frequently can't enter the system normally, press F8 immediately after booting to see if you can enter the safe mode or configure the correct mode for the last time, if you can, the registry will be automatically repaired after entering, and recall what operations were done when the first few abnormal phenomena occurred, and according to the suspicion that a certain application software caused the problem, uninstall it, and then exit normally, and then restart it should be able to enter the normal mode.

If you have security software, you can use 360 Security Guard, 360 Antivirus, Kingsoft Antivirus and other security software in safe mode to check and kill Trojans and viruses. 3. Reinstall the system If the above operations are invalid, you need to reinstall the system.

Now the computer won't turn on at all?

Press and hold the power button and don't move, and it will turn off after a while. Then reboot and restart, press and hold the F8 button and do not move, when the boot menu appears, select the last correct configuration, and press enter to try. If it doesn't work, you restart and hold F8, the menu will appear to select safe mode, enter antivirus, 360 guard scanning, and after processing, restart to try.

If you can't get in, you can only reinstall the system.

A red indication will appear after pressing the power on button often, and then turning on and holding F8 will power off directly.

It's best to reinstall the system, and now it can't be turned on, how to reinstall the system?

You can call a maintenance person to check the next day, and it should be that the system is faulty.

In order for the mobile phone to continue to turn on normally, the following three conditions must be met.

First, the power supply IC is working normally;

The second is logic circuits.

Works fine; The third is that the software is running normally.

The problem mentioned by the subject is definitely a hardware problem rather than a software problem, so the above three can be ruled out.

Let's take a closer look.

1.The power supply IC is working fine.

1) The power supply IC is normal. In order for the power supply IC to work properly, it must have a working voltage, which is generally the battery voltage or the external power supply voltage.

2) There is a boot trigger signal. The current production of mobile phones, both high level.

Trigger, and low level trigger, no matter how it is triggered, the boot trigger signal must be added to the power IC, when pressing the boot button (power switch), the boot trigger signal must have a level change (that is, high to low or low to high).

3) The power supply IC is normal. There are generally multiple sets of controlled and uncontrolled voltage regulator circuits integrated in the power supply IC, and when there is a start-up trigger signal, the voltage output terminal of the power supply C should have a voltage output.

4) There is a power on maintenance signal (watchdog.

signal). The boot maintenance signal comes from the CPU, and the power supply IC can only output a continuous voltage after getting the boot maintenance signal, otherwise, the mobile phone will not be able to continue to power on.

2.The logic circuitry is working fine.

1) There is a normal working power supply. After pressing the power button, the power supply IC outputs a stable supply voltage to power the logic circuits, including the CPU, chips, fonts, and scratchpads.

2) Have a normal system clock. The clock is the basis for the CPU to process data according to the beat, and the clock circuit in the mobile phone is divided into two kinds, one is the clock VCO module, which contains the components and crystals of the oscillation circuit, and when the power supply is turned on normally, it can oscillate by itself to form a 13MHz signal output; The other is composed of an intermediate frequency integrated circuit and a crystal, and the internal oscillation circuit of the intermediate frequency IC is provided for the crystal to vibrate after the power supply is obtained, and the output is amplified by the intermediate frequency block; The 13MHz clock is typically supplied to the CPU via capacitor, resistor, or amplification circuitry, and also to the RF phase-locked loop circuit as the basic clock signal.

3) There is a normal reset signal. When the CPU is first powered up, it has internal registers.

It is in a random state and cannot run the program normally, therefore, the CPU must have a reset signal to reset. The reset end of the CPU in a mobile phone is generally a low-level reset, that is, at a certain clock cycle.

After that, the various registers inside the CPU are cleared to 0, and then the voltage is raised high again, so that the CPU can run the program from scratch.

If the computer fails to turn on, check whether the power supply is turned on. Press the power button to release static electricity; Take out the memory module and wipe the gold finger; Check if the hard drive is in poor contact with the graphics card; Make a USB flash drive boot disk with a one-click reinstall system and plug it into the computer that can't be turned on; Access to the PE system for repair and guidance; Open the novice installer, install the system and restart the computer.

You can force it to enter recovery and flash it.

Here's how:

Tools needed: Xiaomi Note phone.

Take the Xiaomi Note mobile phone as an example, the steps are as follows:

1. Press and hold the power button and the volume up button at the same time when the phone is turned off, until the word MIUI appears and then release, and the phone will automatically enter the recovery mode (some models need to press the volume button to manually select to enter the recovery mode), as shown below:

2. In recovery mode, find and select to install the upgrade software, as shown below

3. In the interface of installing and upgrading software, because our mobile phone cannot be turned on, so find the SD card and click it, as shown in the following figure:

4. Find the ready installation package in the SD card (take the red box as an example), as shown in the following figure

5. After that, a white progress bar will be displayed, wait for the progress bar to complete the progress, as shown in the following figure:

6. When the progress bar is completed, the interface of successful installation will pop up, and then click to confirm the automatic restart to complete the flashing, as shown in the following figure: