Reinstallation Windows on laptops Lenovo - a task that every owner faces sooner or later. Whether it’s a system slowdown, a virus infection, or a desire to upgrade to a new version of the OS, the process requires care and knowledge of the nuances. Unlike desktop PCs, laptops Lenovo often have unique features: hidden recovery partitions, proprietary drivers, and special key combinations to enter BIOS/UEFI.

This article will not just tell you step by step how to reinstall Windows 10 or Windows 11 on your Lenovo IdeaPad, ThinkPad, Legion or another model. We'll sort it out critical mistakes that 90% of users make on their first try (for example, ignoring the setting Secure Boot or incorrect choice of boot mode), and we will also give specific recommendations for optimizing the system after installation. If you've never done anything like this, don't worry: the instructions are adapted for beginners, but also contain advanced tips for experienced users.

1. Preparing for reinstallation: what you need to do before you start

The first and most important stage is preparation. It determines whether the process will go smoothly or turn into a series of errors. Let's start with the most obvious, but often ignored: data backup. Even if you plan to install Windows on another partition, there is always a risk of losing files due to a failure or incorrect action.

List of required actions before reinstallation:

  • 📁 Create a backup copy of important files on an external drive or in the cloud (Google Drive, Yandex.Disk). Pay special attention to folders Documents, Desk, Downloads And AppData (program settings are stored there).
  • 🔑 Find or take a photo of your Windows license key (if you have it activated). To do this, enter on the command line wmic path softwarelicensingservice get OA3xOriginalProductKey.
  • 🔌 Make sure the laptop is connected to a power source. Reinstallation can take anywhere from 30 minutes to several hours, and draining the battery in the process will lead to fatal errors.
  • 📋 Write down your laptop model Lenovo (For example, IdeaPad 5 15ITL05 or ThinkPad T14 Gen 2). This information will be needed to download drivers.

Also check if your laptop has hidden recovery partition. Many models Lenovo (especially from the lines Yoga And IdeaPad) have a factory section Lenovo_Recovery, which allows you to return the system to its original state without a flash drive. To find it, open Disk management (Win + X → Disk Management) and see if there is a 10-20 GB partition labeled OEM.

⚠️ Attention: If you delete the section Lenovo_Recovery during reinstallation, it can only be restored using the official image from Lenovo. This is true for laptops with Windows 10/11 pre-installed.
📊 Which version of Windows are you planning to install?
  • Windows 10
  • Windows 11
  • Linux (dual boot)
  • I don't know
  • Other

2. Selecting Windows version: 10 or 11?

One of the most common questions is which version of Windows to install on Lenovo in 2026. The answer depends on the laptop model, its age and your tasks. Here are the key differences to help you make your choice:

Criterion Windows 10 Windows 11
Hardware requirements Supports older processors (up to 2015), 4 GB RAM, 64 GB disk Officially requires TPM 2.0, processor no older than 2017, 4 GB RAM, 64 GB disk
Performance More stable operation on weak laptops (for example, Lenovo V145 or IdeaPad 320) Optimized for modern processors (Ryzen 5000+, Intel 11/12/13-gen), but may be slow on budget models
Driver support Drivers available for all models Lenovo, including old ones (ThinkPad T440, G50-80) Laptops older than 2019 may not have official drivers (for example, for the touchpad or function keys)
Interface and features Classic Start menu, no forced linking to a Microsoft account New design, virtual desktops, better touch screen support (relevant for Lenovo Yoga)

If your laptop Lenovo released before 2018 (eg ThinkPad E470 or IdeaPad 320), we recommend staying on Windows 10. For 2019 and newer models (e.g. Legion 5, ThinkBook 14) you can safely put Windows 11, but first check compatibility on the Microsoft website.

How to find out the year of manufacture of your laptop? Enter at the command line:

wmic csproduct get name, identifyingnumber

Then find the model by number on the website Lenovo Support — the release date will be indicated there.

💡

If you choose Windows 11, but your laptop does not support TPM 2.0, you can work around this limitation by editing the registry during installation. However, this may cause problems with updates in the future.

3. Creating a bootable USB flash drive: step-by-step instructions

To reinstall Windows, you will need a bootable USB drive with at least 8 GB of capacity. We will look at two ways to create it: using the official tool from Microsoft and through Rufus (for advanced users).

Method 1: Media Creation Tool (recommended for beginners)

This is the most reliable method, since the tool automatically downloads the current version of Windows and configures the flash drive correctly.

  1. Download Media Creation Tool from the Microsoft website.
  2. Launch the program and select Create installation media for another computer.
  3. Specify the language, edition (usually Windows 10/11 Home or Professional) and architecture (64-bit for all modern laptops Lenovo).
  4. Select USB flash memory device and wait for the process to complete (may take up to 1 hour).

Method 2: Rufus (for advanced users)

Rufus allows you to create a bootable USB flash drive with additional settings, for example, disable Secure Boot or delete the requirement TPM 2.0 for Windows 11.

  • 📥 Download Rufus from the official website: rufus.ie.
  • 📁 Connect the flash drive and select it in the program.
  • 🔄 In the section Boot selection click Select and provide the path to the Windows ISO image.
  • ⚙️ B Image parameters select Standard Windows installation (for most cases).
  • 🖥️ B Partition scheme please indicate GPT (for UEFI) or MBR (for Legacy).
  • ⚡ Click Start and wait for the recording to finish.
⚠️ Attention: If you are creating a flash drive for a laptop with UEFI (and this is 99% of modern models Lenovo), be sure to select a partition scheme GPT and file system FAT32. Otherwise, the installer will not see the disk.

The flash drive is formatted in FAT32 (for UEFI) or NTFS (for Legacy)|

Windows image matches your processor bit (x64 for all Lenovo laptops after 2010)|

On the flash drive there are folders sources, boot and the file setup.exe|

The laptop sees the flash drive in the list of boot devices (checked in BIOS) -->

4. Setting up BIOS/UEFI on a Lenovo laptop

One of the most common mistakes when reinstalling Windows is incorrect settings. BIOS/UEFI. Laptops Lenovo have their own peculiarities of entering the BIOS and configuring parameters. Let's look at the process step by step.

How to enter BIOS on Lenovo

Depending on the model, different keys are used to enter the BIOS:

  • 🔧 For most modern models (IdeaPad, Legion, ThinkBook): F2 or Fn + F2.
  • 🔧 For ThinkPad: F1 or Enter → F1 (when the Lenovo logo appears).
  • 🔧 For older models (G500, B590): Del or F12.

If the key does not work, try disabling Fast Boot on Windows (Settings → System → Power and sleep → Advanced power settings → What power buttons do → Change settings that are currently unavailable and uncheck Enable Fast Startup).

What BIOS settings need to be changed?

After entering the BIOS, find the following settings and configure them like this:

Parameter Recommended value Note
Boot Mode UEFI (not Legacy Support) For Windows 10/11, always select UEFI if your laptop supports it (all models after 2012).
Secure Boot Enabled (included) Disable only if you are installing Linux or old Windows 7.
Fast Boot Disabled (disabled) Accelerated loading may interfere with installation from a flash drive.
USB Boot Enabled (included) Otherwise, the laptop will not see the bootable USB flash drive.
TPM Security Enabled (for Windows 11) If disabled, Windows 11 will not install (except for workarounds).

After changing the settings, save them (usually the F10) and reboot your laptop. Now you can start installing Windows.

What to do if the BIOS does not see the bootable USB flash drive?

1. Check that the flash drive is written in FAT32 (for UEFI) or NTFS (for Legacy) format.

2. Try a different USB port (on some laptops Lenovo Only USB 2.0 ports work).

3. Disconnect all other USB devices (mouse, keyboard, external drives).

4. In the BIOS, reset the settings to factory defaults (Load Default Settings) and repeat the settings.

5. If used Rufus, try creating a flash drive again with the parameter DD-mode (in section Formatting options).

5. Windows Installation Process: Step-by-Step Guide

Now that the flash drive is ready and the BIOS is configured, you can begin the installation. Insert the USB drive into your laptop and restart it. If everything is done correctly, you will see the Windows Installer screen. Let's look at the process in detail.

Step 1: Select your locale and locale

On the first screen, select:

  • 🌍 Interface language: Russian (or other desired language).
  • 📝 Time and Currency Format: Russia (or your country).
  • ⌨️ Keyboard layout: Russian.

Click Next → Install.

Step 2: Enter the license key

If you have a product key, enter it. If not, click I don't have a product key. Windows 10/11 will allow you to continue installation without a key, but with a watermark on your desktop. You can activate the system later.

Step 3: Select installation type

Select Custom: Windows installation only (for advanced users). This option allows you to manually configure disk partitions.

Step 4: Disk Partitioning

Here you need to be extremely careful! If you want to completely clean the disk, delete all existing partitions (select each one and click Delete), except:

  • 🔹 Section System Reserved (100–500 MB) - no need to touch it.
  • 🔹 Section Lenovo_Recovery (if it exists and you want to maintain the possibility of recovery).

After deleting the partitions, highlight the unallocated space and click Next. The installer will automatically create the necessary system partitions.

⚠️ Attention: If you delete the section EFI System Partition (usually 100–300 MB), the laptop will not be able to boot after installation! This partition is required for UEFI booting.

Step 5: Complete installation

Then the process will proceed automatically:

  1. The laptop will reboot several times.
  2. After the first reboot don't press any keys, otherwise the installation will start again.
  3. During the setup step, select For personal use.
  4. When prompted for a Microsoft account, you can click Offline account (bottom of screen) if you don't want to commit to Microsoft.

1. Is the flash drive disabled after the first reboot (it needs to be removed).

2. Is the BIOS configured correctly (UEFI, Secure Boot enabled).

3. Are there any conflicts with the hardware (for example, faulty RAM).-->

6. Installing drivers and optimizing the system after reinstallation

After successfully installing Windows, your laptop Lenovo will work, but not at full capacity. There are no drivers for the video card, touchpad, function keys (Fn), Wi-Fi and other components. Let's look at how to install everything you need.

Method 1: Automatic installation via Lenovo Vantage

The easiest method is to use proprietary software Lenovo Vantage:

  1. Connect your laptop to the Internet (via Ethernet or USB modem if Wi-Fi doesn't work).
  2. Download Lenovo Vantage from the official website: Lenovo Support.
  3. Launch the program and go to the section Driver updates.
  4. Click Check for updates and install all the suggested drivers.

Method 2: Manually installing drivers

If Lenovo Vantage does not find some drivers (for example, for a discrete video card NVIDIA or AMD), download them manually:

  1. Go to the site Lenovo Support.
  2. Enter your laptop model (for example, IdeaPad 5 15ARE05).
  3. Select your version of Windows and download the drivers in the following order:
    1. 🖥️ Chipset (chipset).
    2. 🔌 Management Engine (for Intel processors).
    3. 🎮 Graphics (for integrated and discrete video cards).
    4. 🔊 Audio (Realtek or Dolby).
    5. 📶 Network (Wi-Fi and Ethernet).
    6. ⌨️ Keyboard and touchpad.

After installing the drivers, restart the laptop and check the operation of all devices: camera, microphone, function keys (Fn + F1–F12), keyboard backlight (if available).

Optimizing Windows after installation

To your laptop Lenovo worked fast and stable, follow these steps:

  • 🛡️ Disable unnecessary programs in startup: Ctrl + Shift + Esc → Startup.
  • 🔄 Set up your power plan: select High performance for games or Balanced for office work.
  • 🗑️ Disable visual effects: Settings → System → About → Advanced system settings → Performance → Options → Get better performance.
  • 🔒 Install an antivirus (for example, Kaspersky or Bitdefender) and check the system for viruses.
💡

If the touchpad does not work after installing the drivers, check whether it is enabled in the BIOS (Internal Pointing Device should be able to Enabled).

7. Common mistakes and their solutions

Even if you follow the instructions exactly, problems may arise. Let's look at the most common mistakes when reinstalling Windows on laptops Lenovo and ways to eliminate them.

Error: "The required driver for the disk was not found"

This error appears if Windows Installer does not see the hard drive or SSD. Causes and solutions:

  • 🔧 SATA mode in BIOS: Switch SATA Mode with RAID on AHCI (or vice versa).
  • 🔧 Driver missing: Download the driver Intel RST or AMD RAID for your model from the Lenovo website and download it to a USB flash drive. In the installer, click Download driver and specify the path to the file.
  • 🔧 UEFI problem: Try disabling Secure Boot in BIOS.

Error: "Windows cannot be installed on this disk. The selected disk contains an MBR partition table"

This error means that you are trying to install Windows in UEFI, but the disk has markings MBR. Solutions:

  • 🔄 Reboot into BIOS and turn on Legacy Support (if you want to keep the MBR).
  • 📁 Convert the disk to GPT:
    1. In Windows Installer, click Shift + F10to open the command prompt.
    2. Enter the commands in order: 
      diskpart

      list disk
      

      select disk 0
      

      clean
      

      convert gpt
      

      exit

    3. Close Command Prompt and refresh the list of drives in the installer.

Error: The laptop does not turn on after installation (black screen)

If after reinstalling Windows the laptop does not boot, the reasons may be as follows:

  • 🔋 Low battery: Connect the charger and try turning on the laptop.
  • 🔧 Incorrect BIOS settings: Reset the BIOS to factory settings (look for Load Default Settings).
  • 💾 Boot partition damaged: Create a bootable USB flash drive with Lenovo Recovery and restore the system.
  • 🖥️ Equipment conflict: Disconnect all external devices (flash drives, hard drives, docking stations).

    • Error: Function keys do not work (Fn)

    If the keys Fn + F1–F12 do not control brightness, sound or other functions, set:

    1. Driver Hotkey Features Integration from Lenovo website.
    2. program Lenovo Hotkey Utility (for older models).
    3. Check if the feature is enabled Fn Lock in the BIOS (on some models ThinkPad it disables the default key behavior F1–F12).

    8. Questions and answers (FAQ)

    🔹 Is it possible to reinstall Windows on a Lenovo laptop without a flash drive?

    Yes, if your laptop has a hidden recovery partition Lenovo_Recovery. To do this:

    1. Restart your laptop and click F11 or Novo Button (small button next to the power button on some models).
    2. Select System Recovery or OneKey Recovery.
    3. Follow the instructions on the screen. All data on disk C: will be deleted!

    If there is no recovery partition, you cannot do without a flash drive.

    🔹 How can I find out what BIOS version is installed on my Lenovo laptop?

    There are several ways:

    • Via Windows: Click Win + R, enter msinfo32 and find the line BIOS version.
    • Via command line: enter wmic bios get smbiosbiosversion.
    • In the BIOS itself: when logging in, the version is usually displayed on the first screen.
    🔹 Do I need to disable BitLocker before reinstalling Windows?

    Definitely! If on your laptop Lenovo encryption enabled BitLocker, and you forget to disable it, after reinstalling Windows, the data on the disk will be inaccessible. To disable:

    1. Open Control Panel → BitLocker Drive Encryption.
    2. Find the drive C: and press Disable BitLocker.
    3. Wait for the process to complete (may take several hours on large drives).

    If you have already reinstalled Windows and the disk is encrypted, try to restore access using a recovery key (you can find it in your Microsoft account, if you used one).

    🔹 Is it possible to install Windows 11 on a Lenovo laptop without TPM 2.0?

    Yes, but this will require bypassing Microsoft restrictions. Methods:

    • 📁 Through the registry during installation:
      1. At the language selection stage, click Shift + F10to open the command prompt.
      2. Enter regedit and follow the path HKEY_LOCAL_MACHINE\SYSTEM\Setup\LabConfig.
      3. Create parameters BypassTPMCheck And BypassSecureBootCheck with meaning 1.
      4. Close the registry and continue with the installation.