2. Create a bootable USB drive. For more information see the knowledge base article
3. Copy the BIOS setup program file to the bootable USB drive.
4. Connect the bootable USB drive to the computer that needs the BIOS update.
5. Restart the computer and press
F12
when the Dell logo is displayed on the screen.
6. Boot to the USB drive from the
One Time Boot Menu
.
7. Type the BIOS setup program filename and press
Enter
.
8. The
BIOS Update Utility
appears. Follow the instructions on the screen to complete the BIOS update.
Flashing the BIOS
About this task
You may need to flash (update) the BIOS when an update is available or when you replace the system board.
Follow these steps to flash the BIOS:
Steps
1. Turn on your computer.
2. Go to
.
3. Click
Product support
, enter the Service Tag of your computer, and then click
Submit
.
NOTE:
If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model.
4. Click
Drivers & downloads
>
Find it myself
.
5. Select the operating system installed on your computer.
6. Scroll down the page and expand
BIOS
.
7. Click
Download
to download the latest version of the BIOS for your computer.
8. After the download is complete, navigate to the folder where you saved the BIOS update file.
9. Double-click the BIOS update file icon and follow the instructions on the screen.
WiFi power cycle
About this task
If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be performed. The
following procedure provides the instructions on how to conduct a WiFi power cycle:
NOTE:
Some ISPs (Internet Service Providers) provide a modem/router combo device.
Steps
1. Turn off your computer.
2. Turn off the modem.
3. Turn off the wireless router.
4. Wait for 30 seconds.
5. Turn on the wireless router.
6. Turn on the modem.
7. Turn on your computer.
Flea power release
About this task
Flea power is the residual static electricity that remains on the computer even after it has been powered off and the battery has been
removed. The following procedure provides the instructions on how to conduct flea power release:
Troubleshooting
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Summary of Contents for Inspiron 7490 P115G
Page 1: ...Inspiron 7490 Service Manual Regulatory Model P115G Regulatory Type P115G001 ...
Page 49: ...Removing and installing components 49 ...
Page 50: ...50 Removing and installing components ...
Page 53: ...Removing and installing components 53 ...