Xiaomi RedmiBook 9 is Glitzy: Causes and Solutions for All Types of Faults

Xiaomi RedmiBook 9 laptops have gained popularity due to a combination of performance and affordable price, but even they are not immune to failure. If your device starts to slow down, spontaneously reboot or give out errors, it is not always a reason to carry it to the service center. In 70% of cases, problems are solved by software methods or simple cleaning.

In this article, we will break down all the typical RedmiBook 9 malfunctions (including the RedmiBook 9 Pro and RedmiBook 9 e-Learning Edition), their symptoms and step-by-step instructions for eliminating them. BIOS — You will find a solution even for the rare cases when a laptop refuses to turn on or gives a blue screen with cryptographic codes.

We pay special attention to hidden settings BIOS, And that's something that Xiaomi doesn't document, but that can dramatically improve the stability of the system after it's reset to factory parameters.

1. Overheating and sudden shutdowns

The most common problem of RedmiBook 9 — overheating of the processor (especially in models with Intel Core) i5-10210U), which leads to trottling or emergency shutdown. 85°C, but if it exceeds 95°C, that's a critical value.

Causes of overheating:

🔥 Dusty cooling system – dust blocks heat sink and fan
🖥️ The dried thermopaste - through 2-3 The year of operation loses its properties
🔌 Faulty cooler - may not unwind to the desired turns
⚙️ Wrong settings BIOS — Intel SpeedShift or Turbo Boost disabled

How to check the temperature:

Install HWMonitor or Core Temp
Run a stress test in AIDA64 (Tools menu → System Stability Test)
Keep track of indicators during 10-15 minute

📊 How often do you clean your laptop cooling system?

Once in 3 months

Six months

Once a year.

Never.

⚠️ Note: If the laptop turns off at a temperature below 90°C – a problem in the temperature sensor or settings BIOS. Reset to factory settings via Load Optimized Defaults menu.

Brakes and slow operation of the system

If RedmiBook 9 is “thinking” when opening apps or slow to respond to input, it’s the fault of:

Programmatic reasons:

📁 Disk clutter - less than 10% of free space on the disk SSD
🦠 Virtual Threats – Mining Scripts or Spyware
🔄 Background Processes – Autoboot with a dozen unnecessary programs
🗑️ Fragmentation SSD — Despite the myths, it exists on solid-state drives.

Hardware causes:

💾 Wearing SSD — The memory cell life is coming to an end.
🔋 Insufficient power supply – the power supply unit gives less 65W
🔌 Faulty RAM - errors in modules RAM

The first thing to do is:

Disable the autoload of unnecessary programs via msconfig

Check the system for viruses with Kaspersky Virus Removal Tool

Clear the disk from temporary files with the cleanmgr command /sagerun:1

Check your health. SSD CrystalDiskInfo (Reallocated Sectors Count)

Update chipset and graphics card drivers via Driver Booster-->

For a deep diagnosis, use the command:

wpr -start GeneralProfile -start CPU -start DiskIO -start FileIO -start VirtualAllocation -start Handle -start NetworkTrace -start Registry -start MemoryUsage -start Power -start AudioGlitch -start VideoGlitch -start PushNotification -start AppModel -start WindowsErrorReporting -result C:\temp\perf.etl

After collecting data (1-2 minutes) stop recording by the command:



wpr -stop C:\temp\perf.etl

Analyze the perf.etl file in Windows Performance Analyzer (part of Windows) ADK).

3. Charging and battery problems

Typical symptoms of a RedmiBook 9 battery failure:

🔋 The laptop does not turn on without a connected charger
🔌 Charging is only in the off state
⚡ The percentage of charge "jumps" (for example, from 50% to 20%)
⏱️ The battery is discharged for 1-2 hourly with minimum load

Causes and solutions:

Symptoms.	Probable cause	Decision
Not charging at all.	Faulty power controller	Replacement of motherboard or controller
Charging is only when the laptop is turned off.	Firmware failure EC-controller	Flip through the programmer
The percentage of charge jumps.	Battery wear (>500 cycles)	Calibration or battery replacement
Quick discharge when simple	Background processes or wear	Verification through powercfg /batteryreport

For battery calibration:

Charge your laptop to 100%
Turn off the charger.
Discharge until completely shut down.
Leave it off on 5-6 hours
Charge to 100% without interruption

💡

If the laptop does not turn on even with charging, try holding the power button 30-40 seconds to drop the residual charge on the motherboard. 30% This helps in the case of a “dead” state.

4 Mistakes BIOS and loading problems

RedmiBook 9 is used by the InsydeH2O BIOS, It's a buggy bug:

🖥️ Black screen after update BIOS
🔄 Cyclical reboot (bootloop)
🔐 Password request BIOS, never-established
⚙️ Resetting all settings after switching off

For recovery. BIOS:

Download the latest version BIOS from the official Xiaomi website
Unpack the archive and rename the file to bios.bin
Copy it on. FAT32-flash drive (no more than 8 GB)
Insert the flash drive into the laptop turned off
Hold Win. + B and hold on 5-7 Then turn on the laptop.
Wait for the process to end (the indicator on the flash drive will flash)

What to do if your laptop does not respond to Win+B?

If the method is Win+B is not working, you will need a programmer CH341A It's a complex procedure that requires experience, and in this case, we recommend you contact the service center, because the wrong actions can finally kill the motherboard.

After successful recovery BIOS necessarily:

Turn off Fast Boot in the settings BIOS
Turn it on. CSM Support (if you plan to use Legacy download)
Update. EC Firmware through the official installer

5. Wi-Fi and Bluetooth problems

RedmiBook 9 is equipped with Intel modules AX200 qualcomm QCA61x4, which may conflict with Windows drivers. Typical problems:

📶 Wi-Fi connects, but speeds below 10 Mbps
🔄 Permanent connection breaks
🔴 Cross on Wi-Fi badge in tree
🔊 Bluetooth devices are connected, but the sound is interrupted

Decisions:

Remove current drivers through Device Manager
Install drivers from Intel’s website (for AX200) or Qualcomm (for the QCA61x4)
Turn off the adapter settings parameter 802.11n/ac Wireless Mode (sometimes helps with cliffs)
Change your Wi-Fi channel from an automatic router to a fixed router (e.g. 6 or 11)

For diagnosis, use the following commands:

netsh wlan show wlanreport

The report will be stored in C:\ProgramData\Microsoft\Windows\WlanReport\wlan-report-latest.html



ping 8.8.8.8 -t



Connection stability check (CTRL+C for stop)

💡

If the problem only occurs at 5GHz, try turning off support. 80MHz Many Xiaomi laptops do not work well with wide channels in this range.

6.On-screen artifacts and graphics problems

Intel graphics cards UHD Graphics and NVIDIA MX250/MX350 RedmiBook 9 can issue:

🎨 Artifacts – colored stripes, flickers, distortions
🖥️ Black Screens After Waking Up from Sleep
🔄 Screen blinking when scrolling pages
🎮 Departures in games with error nvlddmkm.sys

Causes and solutions:

Symptoms.	Reason.	Decision
Artifacts in games	Overheating of the video card	Cleaning from dust + replacing thermopaste
Black screen after sleep	Driver failure NVIDIA	Driver rollback or clean installation
Screen blinking	Conflict with Windows Update	Install the driver manually with disabling automatic updates
Colored stripes	Matrix plume malfunction	Replacement of a plume or matrix

For the diagnostics of the video card:

Run FurMark (test for the game) 5-10 minute)
Check logs in Event Viewer (Windows Logs section) → System)
Use it. DDU (Display Driver Uninstaller for full driver removal

⚠️ Note: If artifacts appear even in the BIOS, 100% hardware problem: the graphics card or the matrix plume is faulty, and this requires repair.

7. They're not working. USB-port

If you stopped working. USB-touchpad:

For USB:

🔌 Check ports for physical damage (bent contacts)
🔄 Reinstall the controller driver USB via Device Manager
⚡ Turn off the Selective Suspend setting in the power supply settings
🔧 Check the power supply: connect the working device (flash drive with LED) knowingly)

For the touchpad:

⚙️ Turn the touchpad on BIOS (Advanced → Internal Pointing Device)
🖱️ Reinstall the driver ELAN or Synaptics from the official website
🔄 Disable conflicting devices in Device Manager (Mouse partition and other pointing devices)
🔧 Check the touchpad plume (often departs when disassembling a laptop)

To reset the controller USB execute:

set devmgr_show_nonpresent_devices=1


start devmgmt.msc



In Device Manager, enable the display of hidden devices (View → Show hidden devices)


Remove all devices in the “USB controllers” section with a gray icon


Restart the laptop

8.The blue screen of death (BSOD)

Critical errors (BSOD) RedmiBook 9 is the most frequently called:

💾 Incompatible drivers (especially after Windows update)
🔋 Faulty RAM (errors) MEMORY_MANAGEMENT)
💽️ Problems with SSD (mistake CRITICAL_PROCESS_DIED)
⚡ Antivirus conflicts (e.g. Kaspersky) + Windows Defender)

How to diagnose:

After restarting, check the file. C:\Windows\Minidump\*.dmp
Analyze the dump using BlueScreenView or WinDbg
Error Codes for RedmiBook 9: DRIVER_IRQL_NOT_LESS_OR_EQUAL — driver-problem SYSTEM_THREAD_EXCEPTION_NOT_HANDLED — malfunction PAGE_FAULT_IN_NONPAGED_AREA — malfunctioning memory

Universal steps to eliminate BSOD:

Disable fast start in power settings

Start checking system files: sfc /scannow

Check the disk for errors: chkdsk /f /r

Update BIOS last-minute

Perform the RAM test: mdsched.exe-->

If BSOD comes up with code WHEA_UNCORRECTABLE_ERROR — This is a critical hardware error, most often associated with:

Processor overheating
Failure of RAM
Problems with power supply (failed power supply)

FAQ: Frequent questions about RedmiBook 9

❓ Laptop doesn't turn on, power indicator doesn't burn?

1. Check the power supply on another device (should give out) 19.5V/3.33A). 2. Turn off the battery (if possible) and try to turn off the network. 3. Perform the reset. EC-Controller: Turn off charging, press the power button on 60 seconds. 4. If it did not help - the motherboard is defective (diagnosis is required in the service).

❓ How to disable a discrete graphics card NVIDIA charge-saving?

1. Open the control panel. NVIDIA. 2. Go to Parameter Management 3D → Programmatic settings. 3. Choose Integrated Graphics for all applications. 4. In Device Manager, turn off. NVIDIA MX250/MX350 (right-button → Disable the device). ⚠️ After that, the games and heavy programs will not work!

❓ Can we replace it? SSD RedmiBook 9 on its own?

Yes, but: - Use only M.2 2280 NVMe (SATA Not supported. - Maximum volume is 1 TB (officially), but 2 TB are also working (e.g. Samsung 980 Pro). - After replacement, a clean Windows installation will be required (disk cloning often leads to errors). - In some models, when replacing SSD Windows activation flies (tied to the motherboard).

❓ How to drop BIOS, if the laptop doesn't turn on?

1. Turn off the charger and remove the battery (if removable). 2. On the motherboard, find the jumper. CLR_CMOS (near-battery BIOS). 3. Join the jumper contacts with a screwdriver on 10 seconds. 4. If there is no jumper, remove the battery. BIOS on 15-20 minute. 5. After resetting the settings BIOS back to the factory.

❓ Why does the laptop make a lot of noise even in simple?

Probable causes: - Dust in the cooling system (need cleaning). - Failure in the control of the fan (reinstall the Intel Management Engine driver). - Background processes (check in the Task Manager sorting by "CPU"). - Incorrect settings BIOS (Fan Always On is enabled. Use Fan Control or SpeedFan to manually adjust the revs.