Lenovo ThinkPad T470 20HD, Hardware Maintenance Manual, Page: 34 / 116

To run the UEFI diagnostic program, do the following:
1. Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page 29,
and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on page 39
for error code descriptions and troubleshooting hints.
2. When the logo screen is displayed, repeatedly press and release the F10 key. The main screen of the
UEFI diagnostic program is displayed.
3. Follow the instructions on the screen to use the diagnostic program.
The options on the main screen are as follows:
Table 1. Items on the main screen of the UEFI diagnostic program
Tests Tools
• Quick Memory Test
• Quick Storage Device Test
• LCD test
• PCI-e test
• Exit Application • System Information
• Generate configuration file
• Execute from configuration file
• Recover Bad Sectors Tool*
* Recover Bad Sectors Tool is only available on computers that have hard disk drives installed.
Bootable diagnostic programs
If the computer you are servicing is not installed with the UEFI diagnostic program, you can download a
bootable diagnostic program from the Lenovo Support Web site. The bootable diagnostic programs enable
you to test computer memory and internal storage devices, view system information, and check and recover
the internal storage devices. To use the bootable diagnostic programs, you can create a bootable diagnostic
medium on a Universal Serial Bus (USB) device or CD.
To create a bootable diagnostic medium, do the following:
1. Go to http://www.lenovo.com/diags .
2. Click Lenovo Bootable Diagnostics .
3. Follow the instructions on the Web site to create a bootable diagnostic medium on a USB device or CD.
To use the diagnostic medium you have created, do one of the following:
• If you have created the bootable diagnostic medium on a USB device, do the following:
1. Attach the USB device to the computer.
2. Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page
29, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on
page 39 for error code descriptions and troubleshooting hints.
3. When the logo screen is displayed, repeatedly press and release the F12 key. When the Boot Menu
window opens, release the F12 key.
4. Use the arrow keys to select USB HDD and then press Enter. The diagnostic program will be
launched automatically.
5. Follow the instructions on the screen to use the diagnostic program.
• If you have created the bootable diagnostic medium on a CD, do the following:
1. Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page
29, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on
page 39 for error code descriptions and troubleshooting hints.
2. Connect an external optical drive to the computer, and insert the CD into the optical drive.
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T470 Hardware Maintenance Manual