The Xiaomi G27i monitor is a popular model among gamers and professionals thanks to a combination of 165 Hz, support for AMD FreeSync Premium and stylish design. However, even with such an advanced device, users sometimes face the problem: the monitor does not respond to the on button or refuses to display the image.
In this article, we will discuss all the possible ways to turn on the Xiaomi G27i, including standard methods, emergency options and fault diagnosis. You will learn how to distinguish hardware from software failure, what to do if the monitor is dead, and how to avoid typical errors on the first connection.
1. Standard on: power button and indicators
To start with, the basic method that works 90% of the time: The power button on the Xiaomi G27i is located on the right sidebar (when you look at the monitor from the front) and has a tactile indentation for easy pressing, which is combined with a menu control joystick, but it is enough to enable a short press.
After clicking, pay attention to the power indicator in the lower right corner of the frame:
- 🟢 Green light – monitor is on and receives a signal from the source (PC, console, laptop).
- 🟠 Orange/Yellow – monitor is on but no signal (check cable or source).
- ⚫ No light – no power comes (problem with socket, cable or power supply).
If the light doesn't light at all, try holding the power button for 10-15 seconds, it will reset the temporary freeze. If there is no reaction, move to the next section.
2. Verification of power and cable connection
About 30 percent of Xiaomi support requests for a broken monitor are solved by a simple connection check, starting with the power supply:
- 🔌 Power cable: Must be tightly inserted into the connector on the back of the monitor and into the socket, check if it fell out when moving the device.
- ⚡ Socket/network filter: connect another device (like charging your phone) to make sure there is a voltage. Avoid using thin wire extension cords - they may not be able to withstand the load.
- 🔄 Power supply: y G27i Make sure the indicator on the block is green. If not, the block is faulty (replacement required).
Check the video cables (HDMI/DisplayPort):
- 🖥️ PC Connection: If you use a discrete graphics card, the cable should be inserted into its ports, not the motherboard.
- 🔄 Reconnect the cable: remove and paste back on both sides (monitor and signal source).
- 🛠️ Check the cable for damage: bends, breaks or melted contacts - a reason to replace it.
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If the monitor is turned on but the image is missing, try pressing Win + Ctrl + Shift + B on the keyboard – this will restart the Windows graphics driver.
3. Hardware reset of the monitor (Hard Reset)
If the Xiaomi G27i does not respond to the power button or “hang” on the logo, a hardware reset will help.This procedure zeroes the temporary settings and resets the cache without affecting the user parameters (brightness, contrast, etc.).
Resetting instructions:
- Turn off the monitor from the outlet (remove the power cable).
- Hold the power button for 30 seconds, it will drain the capacitors.
- Connect the power back and turn on the monitor with a button.
If the reset didn't work, repeat the procedure, but leave the monitor offline for 2-3 minutes, giving you time to completely discard the internal circuits.
Disconnect all cables (power, HDMI, DP)
Make sure the power button doesn’t go off
Wait at least 30 seconds before re-energizing
Check the power indicator after connection-->
4. Diagnostics of malfunctions on the behavior of the monitor
To understand what’s wrong with your G27i, look at its “symptoms” and see a table of typical signs and their possible causes below:
| Monitor behaviour | Probable cause | Decision |
|---|---|---|
| No response to the button, the indicator does not burn | Lack of power, faulty power supply | Check the socket, the cable, the power supply. Try another cable. |
| The indicator is lit orange, no image | No signal from the source or incorrect input | Check the cable (HDMI/DP) and select the correct input with the Source button. |
| The monitor is turned on, but after 1-2 seconds it is turned off. | Overheating, firmware failure, inverter malfunction | Let me cool for 30 minutes. If it doesn't work, call the service. |
| Image is there, but with artifacts (strips, flickering) | Cable damaged, incompatible mode (resolution/frequency) | Replace the cable. In the PC settings, set 1920×1080@165Hz. |
| The power button is locked or not pressed | Mechanical breakage of the button | Contact the service center to replace the control panel. |
Critical information: if the monitor turns on, but immediately turns off with the flashing of the indicator, this may indicate a malfunction of the LED backlight. Self-repair in this case is impossible - you need to replace the matrix or inverter.
5.Firmware problems and factory reset
In rare cases, the Xiaomi G27i may “block” due to a firmware failure (for example, after an interrupted update), this manifests as an endless boot (the Mi logo hangs for more than 5 minutes) or a cyclic reboot.
To reset the monitor to factory settings:
- Turn off the monitor with the power button.
- Press the Menu button (joystick) and, holding it, turn on the monitor.
- Hold the Menu for another 10-15 seconds until the reset menu appears.
- Select Reset All and confirm (usually with OK button).
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Warning: Reset will remove all user settings (image modes, color calibration, etc.) After the procedure, the monitor will reboot automatically.
What to do if the reset does not help?
Turning on the monitor without a power button (emergency methods)
If the power button on the G27i breaks or crashes, you can turn on the monitor in alternative ways:
- 🔌 Through the timer outlet: connect the monitor to a smart outlet (for example, Xiaomi Mi Smart Plug) and control power through the Mi Home app. After power is applied, the monitor will turn on automatically (if Power On When mode is activated in the settings). AC Restored).
- 🖥️ PC signal: some motherboards (e.g, ASUS, MSI) They can send a command to turn on the monitor. HDMI-CEC Or DisplayPort. BIOS You need to activate the option ErP Ready or Wake on USB/HDMI.
- 🔧 Disassembly and closure of contacts: only for power users! on the control board there are contacts of power buttons that can be closed with tweezers (risk of damage to the board!).
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Warning: If you decide to disassemble the monitor for closing contacts, first disconnect it from the network and discharge high-voltage capacitors (wait 10-15 minutes).
7. Frequent User Errors and How to Avoid Them
Many of the problems with the Xiaomi G27i are due to non-obvious connection or setup errors, and here are the most common ones:
- 🚫 Using uncertified cables: cheap HDMI/DisplayPort-cables may not support 165 Hz or FreeSync, which results in the absence of an image. Use only cables labeled High Speed or Ultra High Speed.
- ⚡ Connection to a weak power source: if the monitor power supply is connected to USB-Hub or weak extension, voltage may not be enough to start. Always use a straight outlet.
- 🔄 Incorrect order of on: some PCs will not detect the monitor if it was turned on after the system boots. First turn on the monitor, then turn on the PC.
- 🎮 Console limitations: PlayStation 5 and Xbox Series X do not support 165Hz by default. In the console settings, you need to manually select 120Hz or 60Hz.
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Before the first switch on Xiaomi G27i, be sure to check that the signal source menu (PC, console) has a resolution of 1920×1080 and a frequency of 60 Hz. After a successful launch, you can increase the frequency to 165 Hz.