Download and identify compatible Lenovo ThinkPad R400 drivers for legacy
Windows installations, including graphics, audio, Ethernet, wireless LAN,
UltraNav, fingerprint, power management, Bluetooth, and Intel management
components.
The Lenovo ThinkPad R400 is a legacy business notebook with multiple
hardware configurations. That means the correct driver can depend on the
installed graphics adapter, wireless card, biometric hardware, and system
configuration.
This page is organized around the practical driver categories needed after
a clean Windows installation. Instead of combining unrelated third-party
download lists, each download entry points to a Lenovo support package or
Lenovo-hosted support document so you can verify compatibility before
installing a file.
Important:
Do not assume every R400 has the same hardware. In particular, the display
driver must match the graphics configuration. Some R400 configurations use
Intel GM45 graphics, while Lenovo also documents ATI/AMD discrete graphics
support for compatible R400 configurations.
ThinkPad R400 Driver Compatibility at a Glance
Primary OS
Windows 7
Legacy OS
Windows XP
Architecture
32-bit / 64-bit
Graphics
Intel / ATI
Before Downloading a ThinkPad R400 Driver
Confirm the installed Windows edition and whether it is 32-bit or 64-bit.
Check Device Manager before choosing graphics, wireless, Bluetooth, or
fingerprint packages.
Prefer the package designed for the exact R400 hardware configuration.
Create a restore point or system backup before replacing a working driver.
For a clean installation, install the chipset/platform components first,
then graphics, audio, network, input, power, and optional management
software.
Windows XP note:
Lenovo's archived packages do not provide the same level of support for
every component and architecture. Some packages explicitly support XP
32-bit, while selected Lenovo components also list XP 64-bit support.
Always follow the operating-system information shown in the corresponding
Lenovo package.
Showing all available driver packages.
Lenovo ThinkPad R400 Driver Downloads
Use the operating-system filter above, then open the relevant driver
category. The tables are intentionally separated by hardware function so
that you can identify what you actually need instead of downloading every
package.
Graphics and Display4 packagesOpenClosed
Name
Version
Size
Download
Intel GM45 Display DriverFor Intel Mobile 4 Series Express Chipset graphics
Recommended ThinkPad R400 Driver Installation Order
Install the chipset and platform components first.
This helps Windows correctly identify system devices before installing
function-specific drivers.
Install the correct graphics driver.
Check whether your R400 uses Intel GM45 graphics or a compatible ATI/AMD
discrete configuration before choosing the package.
Install audio and network drivers.
Ethernet is useful for getting the machine online before installing any
additional software.
Install wireless LAN and Bluetooth drivers.
Verify the installed wireless adapter in Device Manager rather than
selecting a package only by the laptop name.
Install UltraNav, power management, and fingerprint software.
These components restore the expected ThinkPad-specific functions.
Install Intel AMT/ME components only when required.
Management Engine and AMT packages are configuration-dependent and should
not be installed blindly.
How to Identify the Correct R400 Driver
Check the hardware name
Open Device Manager and look under Display adapters,
Network adapters, Sound, video and game controllers, Bluetooth, and
Biometric devices. The hardware name can help you distinguish between
otherwise similar driver packages.
Use Hardware IDs when Windows cannot identify the device
Right-click the unknown device, select Properties,
open the Details tab, and choose
Hardware Ids. The VEN/DEV or similar hardware identifier
is often more reliable than guessing from the notebook model alone.
Confirm the Windows architecture
On Windows 7 or XP, open the system properties and confirm whether the
installation is 32-bit or 64-bit before downloading an architecture-specific
package.
ThinkPad R400 Driver Troubleshooting
Graphics is stuck at Microsoft Basic Display Adapter:
Install the correct Intel GM45 or ATI/AMD package for your hardware
configuration and restart the notebook after installation.
No Ethernet connection:
Install the Intel PRO/1000 LAN package and verify the Network adapters
section in Device Manager.
Wi-Fi driver installs but no wireless networks appear:
Confirm the actual wireless adapter model in Device Manager. The R400 was
sold with different wireless hardware, so one Intel WLAN package may not
apply to every configuration.
TrackPoint or touchpad functions are incomplete:
Install the Lenovo Synaptics UltraNav package rather than relying only on a
generic pointing-device driver.
Frequently Asked Questions
Does this page support Windows 7 32-bit and 64-bit?
Yes. Several Lenovo packages listed here explicitly provide Windows 7
32-bit and 64-bit support, including graphics, Ethernet, UltraNav,
fingerprint, power management, and selected management components.
Does the ThinkPad R400 support Windows XP?
Lenovo provides archived Windows XP packages for the R400. However,
support differs by component and hardware configuration, so the
operating-system field of each Lenovo package should be checked before
installation.
Which graphics driver should I install?
Start by checking Device Manager. Intel GM45 is appropriate for the
compatible Intel graphics configuration, while ATI/AMD packages are
intended for compatible discrete graphics configurations.
Can I install every driver shown on this page?
No. Driver packages should be selected according to your Windows
architecture and installed hardware. Optional management or biometric
packages are not required on every ThinkPad R400.
Why do some Lenovo driver pages cover several ThinkPad models?
Lenovo often publishes shared driver packages for groups of ThinkPad
systems that use the same controller, chipset family, or device.
Always confirm that ThinkPad R400 appears in the compatible systems
section before installing the package.
Driver source:
The download references on this page point to Lenovo Support and Lenovo
support-hosted documentation. Package availability, compatibility, and
driver information may change as Lenovo maintains its legacy support
archive.
Cloud Drivers is an independent driver-information website and is not
affiliated with Lenovo. Lenovo, ThinkPad, and related trademarks belong to
their respective owners.
Because the ThinkPad R400 is a legacy notebook, this guide focuses on the
Windows versions and Lenovo packages that are documented for this model
family. For the safest installation, compare the driver name, Windows
architecture, and hardware configuration before installing any package.
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