Lenovo ThinkPad E475 User Manual

Also see for 20H4: Hardware Maintenance Manual

2. Turn on the computer and repeatedly press F12 until the Boot Menu window opens.3. In the Boot Menu window, select the optical drive (internal or external) as the first boot device. Then,insert the discs into the optical drive and press Enter. The recovery process starts.4. Follow the instructions on the screen to complete the operation.• If you have created the recovery media with a USB storage device, do the following:1. Attach the USB storage device to one of the USB connectors on your computer.2. Turn on the computer and repeatedly press F12 until the Boot Menu window opens.3. In the Boot Menu window, select the USB storage device as the first boot device and press Enter. Therecovery process starts.4. Follow the instructions on the screen to complete the operation.Note: After restoring your computer to the factory default settings, you might have to reinstall the devicedrivers for some devices. See “Reinstalling preinstalled programs and device drivers” on page 80.Reinstalling preinstalled programs and device driversYour computer enables you to reinstall preinstalled programs and device drivers.Reinstalling preinstalled programsTo reinstall programs preinstalled on your computer, do the following:1. Turn on your computer.2. Go to C:\swtools.3. Open the apps folder. The folder contains several subfolders named for various preinstalled programs.4. Open the subfolder and locate the EXE file.5. Double-click the EXE file and follow the instructions on the screen to complete the installation.Reinstalling preinstalled device driversAttention: Reinstalling device drivers will change the current configuration of your computer. Reinstalldevice drivers only when it is necessary to solve a problem with your computer.To reinstall a device driver for a factory-installed device, do the following:1. Turn on your computer.2. Go to C:\swtools.3. Open the Drivers folder and locate the subfolder that is named after the factory-installed device in yourcomputer, such as AUDIO or VIDEO.4. Open the subfolder for the device.5. Reinstall the device driver by one of the following methods:• If the device subfolder contains an EXE file, double-click the EXE file and follow the instructions onthe screen to complete the installation.• If the device subfolder contains a readme TXT file, the device driver installation information is includedin the readme file. Follow the instructions to complete the installation.• If the device subfolder contains an INF file, right-click the INF file and select Install. Then follow theinstructions on the screen to complete the installation.If you need updated device drivers for your computer, download and install them from the Lenovo SupportWeb site at:80 E475 User Guide