Why hangs Xiaomi Redmi Note 9 laptop: all the reasons and ways to eliminate

Xiaomi Redmi Note laptop 9 (or its modifications RedmiBook 14/15/16 Pro) may suddenly start to slow down, "think" for a few seconds or completely freeze. This is annoying, especially if the device was used consistently. 80% In cases, the problem is solved without contacting the service - it is enough to correctly diagnose the cause.

In this article, we will look at all possible causes of freezes, from software failures to hardware malfunctions, and give step-by-step instructions for their elimination, with a special focus on the unique “diseases” of the Redmi Note 9 line that are not found in other brands: For example, driver conflicts on AMD Ryzen 5 4500U or errors in the management of food in BIOS Xiaomi.

If your laptop only hangs in games, when you connect to the network or after a Windows update, here are the exact recommendations. For convenience, we have compiled a table of symptoms and solutions, and added interactive widgets for quick diagnosis.

1.Overheating: the main cause of the Redmi Note 9 freezes

Notebooks Xiaomi Redmi Note 9 (especially with processors Ryzen 4000) are prone to overheating due to the compact body and not always an effective cooling system. CPU 90°C system begins trottling (forced frequency reduction), which leads to lags or complete "freezing" of the screen.

How to check the temperature:

• 🔥 Use HWMonitor or Core Temp (download only from official websites!).
• 📊 Normal readings: up to 70°C in plain, up to 85.°C under load. If above, we need action.
• ⚠️ Critical symptom: laptop turns off spontaneously when playing or rendering.

Decisions:

1. Dust cleanup: Take apart your laptop (or contact the service) and blow the fan with compressed air.In the Redmi Note 9, dust often accumulates in the radiator due to the dense layout.
2. Replacement of thermopaste: The factory often uses cheap paste that dries in 1-2 years. MX-4 noctua NT-H1.
3. Cooled stand: Models with additional fans (e.g. Cooler Master NotePal) X3) reduce the temperature by 5-10°C.

⚠️ Warning: If the temperature does not fall below 80 after cleaning°C in plain, this may indicate a faulty cooler or radiator detachment (a common problem after falls.

Driver conflicts: why Redmi Note 9 is "slowing down" after Windows update

Xiaomi often ships laptops with customized drivers that may conflict with Windows updates 10/11. Typical symptoms:

• 🖥️ The screen “hangs” for 5-10 seconds, then everything is restored.
• 🔊 The sound starts to stutter when playing the video.
• 🎮 Games fly out with a mistake DXGI_ERROR_DEVICE_HUNG.

The most problematic drivers in Redmi Note 9:

Step-by-step instructions for reinstalling drivers:

1. Open Device Manager (Win + X → Device Manager).
2. Find the problem device (such as display adapters) → AMD Radeon).
3. Right-click → Update the driver → Search for drivers on this computer.
4. Select the driver from the list and install the compatible version.

Download drivers in advance to another PC|Create a System Restore Point|Disable the antivirus during installation|Connect your laptop to the network (do not use the battery)-->

Lack of RAM: when 8 GB is no longer enough

Redmi Note 9 often comes with 8GB of RAM, which is enough for office tasks. AMD Ryzen 4000 (built-in Vega graphics “eats” up to 2 GB of memory) and background processes of Windows 11 free memory may not be enough.

How to check the use of RAM:

1. Open the Task Manager (Ctrl + Shift + Esc).
2. Go to the Productivity tab. → Memory.
3. If the section is used (compressed) constantly more than 70% - memory is not enough.

Optimization methods:

• 🧹 Turn off unnecessary autoboots: in Task Manager → Disable programs that you don’t use daily.
• 🔄 ReadyBoost: If you have a 16-strip drive+ GB, plug it in and enable the function in Disk Properties → ReadyBoost.
• 🛠️ Add RAM bar: Redmi Note 9 supports up to 16GB (check compatibility with motherboard model).
• 🖥️ Go to Windows 10 LTSC: This version is lighter than Windows 11 and has no Microsoft Store background processes.

⚠️ Note: If the laptop doesn't turn on after adding RAM, check if your motherboard supports dual-sided modules. Redmi Note 9 sometimes has conflicts with the bars from Crucial - it's better to choose Samsung or Kingston.

4. Problems with the drive: SSD or HDD lag-bag?

In budget modifications Redmi Note 9 can stand HDD (For example, Seagate. ST1000LM035), It slows down over time because of fragmentation or bad sectors. SSD (Like Kingston. OM8PCP3) It can work slowly if it is over 80%.

How to diagnose a disc:

• 📊 Use CrystalDiskInfo to check your condition (S.M.A.R.T.). Note the settings: Reallocated Sectors Count (should be 0) Current Pending Sector (should be 0).
• ⚡ Run a speed test at CrystalDiskMark. SSD: read/write 300+ MB/s.

Decisions:

If CrystalDiskInfo shows the status of a Caution, immediately make a backup data – the disk can fail at any time. SSD Western Digital SN550 Samsung 970 EVO Plus (they are optimized to work with the AMD Ryzen).

1. Turn off the laptop.

2.Flip and unscrew 10 screws on the back cover.

3. gently disconnect the battery plume (black connector on the right).

This will prevent short circuits when working with iron.-->

5. Failures in BIOS: Hidden settings that slow down the laptop

Xiaomi often blocks or hides important settings in the BIOS, This can cause iron to work in a suboptimal way, for example, the default can be to turn off Turbo Boost or to turn on energy saving mode, which limits performance.

How to enter BIOS on the Redmi Note 9:

1. Turn off the laptop.
2. Hold it. F2 Turn on the power (hold the button until the menu appears).
3. If you don’t, try Del or F12.

What settings to check:

• 🔋 Power Management: Install Max Performance instead of Balanced.
• 🖥️ Advanced → CPU Configuration: Turn on Turbo Mode. Turn off C-States (if there are lags when you get out of sleep).
• 💾 Boot Options: Disable Fast Boot (may cause driver conflicts).

💡

If, after the changes, BIOS laptop doesn't turn on, reset: remove the battery and hold the power button for 30 seconds. CMOS.

Features of the Redmi Note 9: firmware BIOS missing option XMP If you have set up high-frequency RAM (for example, DDR4-3600), She'll work on it. 2400 MHz. The solution is to update. BIOS Up to the latest version (you can download it on the official Xiaomi website).

6. Viruses and Malware: Why Antivirus Doesn't Help

Even if you have an antivirus installed, some types of malware may go undetected and load the system.

• 🕵️‍♂️ Laptop slows down when connecting to the Internet.
• 📥 Task Manager has unknown processes (svchost.exe with high load).
• 🔗 Browser redirects to strange sites.

What to do:

1. Virus Check: Download Kaspersky Virus Removal Tool (portable version). Run Safe Mode Check (contain when downloading) F8).
2. Remove Adware: Use AdwCleaner or Malwarebytes. Remove browser extensions that you didn't install.
3. Host check: Open up C:\Windows\System32\drivers\etc\hosts Delete all lines except for the notebook. 127.0.0.1 localhost.

If the antivirus finds threats, but after removing the problem returns, do a full reset of Windows:

Settings → Update and Security → Restore → Return the computer to its original state

⚠️ Note: Redmi Note 9 sometimes has a mining virus that uses the GPU Check the download of the video card in Task Manager — if it is 100% without running games, it is definitely a miner.

7 Power problems: why the laptop hangs from battery or charging

Xiaomi laptops are sensitive to power quality, and if the power supply doesn’t produce enough current or the battery is worn out, the system can “brake” or suddenly shut down.

How to check:

• 🔌 Connect your laptop to another outlet (exclude network filter problems).
• 🔋 Check the battery wear: Run CMD In the name of the admin, enter powercfg. /batteryreport. Open the battery-report.html file you generated. See Design Capacity vs Full Charge Capacity. >30%, battery-change.

Redmi Note 9

65W

Decisions:

• 🔄 Reset the power controller: Turn off the laptop. Disconnect the charger and battery (if removable). Hold the power button for 60 seconds. Connect the charger and turn on the laptop.
• ⚙️ Set up the power circuit: Open the Control Panel → Power. Select High Performance. Click Power Setup. → Modify additional parameters. Set the minimum state of the processor → 100%.

💡

If the laptop hangs when connected to a docking station or external monitor, try turning it off. USB Selective Suspend in Power Settings. This often solves the fading problem» USB-device.

8. Hardware malfunctions: when to carry in the service

If all software methods have been tried, but the Redmi Note 9 continues to hang, the problem may be in the hardware.

If you suspect a hardware problem, don't try to repair yourself - the Redmi Note 9 has a thin motherboard that's easy to damage with unqualified intervention.

Cost of typical repairs for Redmi Note 9 (2026):

• 🔧 Replacement of thermopaste + cleaning: 1500-2500 rubles.
• 💽 Replacement SSD: 2000–4000 rubles (including the drive).
• 🔋 Battery replacement: 3000-5000 rubles (original).
• 🖥️ Supplier GPU: 5000-8,000 rubles.