Xiaomi RedmiBook 4 laptop does not turn on: what to do and how to bring it back to life

Your Xiaomi RedmiBook 4 has stopped turning on, and you don't know where to start? This problem can arise from both a banal battery discharge and serious hardware malfunctions. In 80% of cases, the laptop can be "resuscitated" yourself without going to the service center. In this article, we will analyze all possible causes, from simple to complex, and give step-by-step instructions with photos and videos (where appropriate).

Importantly, if the laptop is responding to charging (the indicator lights up) but it doesn't turn on, that's one scenario, and if it's completely dead (no indication, no heat, no sounds), the other one, we'll look at both, and you'll learn how to tell the difference between a software failure and a hardware failure, and when it's time to carry the device for repair.

Basic checks: power, cables and power button

Start with the basics -- often the problem is in the little things that are easy to miss.

• 🔌 Check the charger. Connect it to another device (like a supported smartphone). USB-C PD) Or try another smear with similar characteristics (65W/20V for RedmiBook 4).
• 🔋 Look at the cable. Insulation overburden, melting, or damage is a signal to replace. USB-C.
• 🔄 Try another connector. RedmiBook 4 has two ports. USB-C — Connect the charger to both in turn.
• 🖱️ Press the power button for 15 to 20 seconds, sometimes resetting the "hang" state of the power controller.

If you have a charging indication after this manipulation (usually a white or orange LED), but the laptop still doesn't turn on, move on to the next section. If there is no indication, the problem may be a power supply, battery or motherboard.

⚠️ Note: Do not use chargers with power output higher 65W (for example, 100W This could damage the RedmiBook 4 power controller.

2. Diagnosis by indicators: what do LEDs mean

The Xiaomi RedmiBook 4 has two key indicators:

• 🔆 Power Indicator (white/orange) – shows charging status.
• 💻 Work indicator (white) – signals the inclusion of the laptop.

Decoding of states:

If the power indicator is on orange, but after an hour of charging does not change color to white - most likely, the battery or charging controller is faulty, in which case the laptop can only turn on from direct power (without battery).

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If the laptop does not turn on, but the fan is briefly started - this is a sign of a malfunction of RAM or graphics card (in RedmiBook 4 it is integrated into the processor).

3. Reset BIOS/UEFI: When the laptop “hangs” at the firmware level

If RedmiBook 4 not turned on, but the power indicator is lit white, the settings may fail BIOS/UEFI. It often happens after that:

• ⚡ Failed update BIOS.
• 🔧 Changes to acceleration or power management settings.
• 🛠️ Incorrect power outage during work.

For discharge BIOS Xiaomi RedmiBook 4 has two methods:

Method 1: Hardware reset (for advanced users)

1. Turn off the charger and remove the battery (if possible without disassembly).
2. Press the power button for 60 seconds, and this will discharge the residual energy in the capacitors.
3. Connect the charger and try to turn on the laptop.

Method 2: Reset via key combination

Some RedmiBook models have a hidden combination:

1. Shut down the power.
2. Hold Win. + B (or Fn) + Esc - Depends on the version BIOS).
3. Without releasing the keys, connect the charger.
4. Hold the combination for another 10-15 seconds, then let go and try to turn on the laptop.

If the discharge BIOS Not helped, go to check RAM and storage.

4. Checking of RAM and SSD: hardware malfunction

If the laptop responds to the on button (the indicator lights up, the fan turns, but the screen remains black), the problem may lie in RAM or the drive. RedmiBook 4 has memory installed. DDR4 format SO-DIMM, which can be extracted and tested.

How to check the working memory:

Remove the battery and turn off the power.|Remove the bottom cover (unscrew 10 Torx screws) T5)|Carefully remove the RAM bars from the slots|Clean the contacts with a swallow or alcohol|Set the memory back (try changing the bars in places)-->

If the laptop turned on after reinstalling the memory, the problem was in poor contact or malfunction of one of the slats. If not, try starting with one bar (alternately in each slot).

Verification SSD:

RedmiBook 4 is used in the M.2 SSD (It's usually PCIe NVMe:

1. Extract. SSD Then connect it to another device (for example, through a USB-M.2 adapter).
2. Check if the drive is defined in the system (for example, in Windows Disk Management).
3. If SSD If it's detected, but the laptop doesn't turn on, the controller may be the problem. SSD slot M.2.

⚠️ Attention: If you are not sure about your disassembly skills, it is better to contact the service. SSD It can damage the connectors on the motherboard.

5. Connection to an external display: diagnostics of the video output

A black screen when turned on doesn't always mean that the laptop isn't working, it might be a matrix, a plume, or a graphics card, to check that out:

1. Connect RedmiBook 4 to an external monitor or TV HDMI or USB-C (Supported by DisplayPort Alt Mode).
2. Press the Fn combination + F1 (phn + F8, depending on the model) for switching the output of the image.
3. If an image appears on the external screen, the problem is in the matrix or plume of the laptop.

If the external display also does not show the image, but the laptop is buzzing (the fan is working) and the indicators are burning, the following malfunctions are possible:

• 💥 Integrated graphics malfunction (in Intel Core processors or AMD Ryzen).
• 🔌 Problems with the north bridge of the motherboard.
• 🖥️ Firmware failure BIOS, video-initialization.

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If the laptop displays an image on an external monitor, but not on the built-in one, 90 percent of the time it's the matrix plume or the matrix itself, and it's cheaper to replace them than it is to repair the graphics card.

6 When it's time to bring to service: signs of serious breakdown

If all previous steps have failed, it is likely that the problem requires professional repair.

• 🔥 Laptop smells like smoke or shorts when connected to power.
• 💧 On the motherboard, darkening, swollen capacitors or traces of liquid are visible.
• 🔌 Laptop does not respond to charging (no indication, even after checking the power supply).
• 💻 After turning on the fan works at maximum, but the screen remains black.
• 🔄 The laptop is cyclically rebooted (on and off immediately).

Typical faults requiring repair:

If RedmiBook 4 You can get your warranty, don't take it apart yourself! Contact the official Xiaomi service center. mi.com/ru/service.

7 Prevention: How to avoid problems in the future

To make your Xiaomi RedmiBook 4 last longer without crashes, follow the simple rules:

• 🔋 Don't drain the battery to 0%. Optimal range is 20% to 80%. Use Mi Battery Care utility to control.
• 🌡️ Keep a temperature check. Clean the cooling system of dust regularly (every 6 months).
• ⚡ Use the original charger. Cheap analogs can damage the power controller.
• 🔄 Update. BIOS Only through the official Xiaomi website and do not interrupt the process.
• 💾 Check your health periodically SSD CrystalDiskInfo: Reallocated Sectors Count or Uncorrectable Errors.

We also recommend you create an emergency flash drive with a Windows or Linux installation image, which will help you quickly restore the system if the laptop stops booting.

1. Download the image from the official Microsoft website (link).
2. Use the Rufus utility to write to a flash drive (FAT32, partition GPT).
3. Keep the flash drive in a safe place - it will help if the loader fails.

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If your laptop overheats frequently, install ThrottleStop to monitor temperatures and limit your temperature. TDP This will extend the life of your RedmiBook 4.

FAQ: Frequent questions about Xiaomi RedmiBook malfunctions 4