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How to Use and Troubleshoot the Inspiron 14R 5421



This article provides information on using and troubleshooting your Inspiron 14R 5421, including:

  • Wireless Networking.
  • Windows.
  • Mouse, Touchpad, Keyboard.
  • LCD.
  • Webcam.
  • Drivers.

Table of Contents:

  1. The Computer Fails to Start or There is No Video
  2. The Computer Stops Responding
  3. Microsoft Windows Crashes, Stops, Restarts or a Blue Screen Appears
  4. Dell PC Diagnostics Quick Test and SupportAssist for PCs and Tablets
  5. Troubleshooting a Notebook LCD Screen That is Black, Blank or Hard to See
  6. Inspiron 14R 5421 Specifications
  7. Port Locations
  8. Resetting the System Setup (BIOS) to its Default Settings
  9. Wireless Networking How-to's and Troubleshooting
  10. How to Turn the Wireless Antenna On and Off on a Dell Computer
  11. Disabling or Enabling the Touchpad Using the Hot Key
  12. Mouse, Keyboard or Touchpad Not Working Correctly
  13. Using and Troubleshooting the Dell Webcam and Dell Webcam Central Software
  14. Computer Component is not Recognized
  15. Inspiron 14R 5421 Drivers
  16. Dell Windows Support Center

1. The Computer Fails to Start or There is No Video

If you experience a situation in which the computer does not start at all or if it does turn on (lights turn on and fans are spinning), but the computer does not show any image, listen for a series of beeps during start-up.

When beeping codes are heard, refer to (Table 1) to help troubleshoot the issue with your computer.

Beep Code Possible Problem
One
Possible system board failure - BIOS ROM checksum failure
Two
No RAM detected.
Three
Possible system board failure - Chipset error
Four
RAM read/write failure
Five
Real Time Clock failure (CMOS battery failure)
Six
Video card or chip failure
Seven
Processor failure
Eight
Display (LCD) failure

Table 1: Repetitive Beep Codes


When no beeping codes are heard, perform the following steps:
  1. Disconnect all external peripherals including the keyboard, mouse, and external monitor. Peripherals also include external storage devices such as flash drives, USB devices, printers, cards etc.
  2. Remove the A/C adapter from the computer and unplug the adapter from the A/C outlet.
  3. Remove the battery, for more information on how to remove the battery, browse to the Inspiron 14R 5421 Online Manual Page, and click Owner's Manual.
  4. Press the Power button for 15 seconds.
  5. Make sure the connections on the power cord and A/C adapter are firmly pressed together.
  6. Insert the A/C into the computer and a good A/C outlet.
  7. Press the power button to see if the computer turns on and boots up ok, if not, refer to Dell Knowledge Base article Computer Does Not Turn on, or is Stuck on the Dell Logo Screen.
  8. Turn the computer off and insert the battery back into the computer.
  9. Press the power button to see if the computer turns on and boots up ok, if not, refer to Dell Knowledge Base article Check the Battery.
  10. Start attaching devices one at a time and testing to see if the computer will turn on.
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2. The Computer Stops Responding

  1. Press the Power button for at least 15 seconds to make sure the computer turns off.
  2. Disconnect all external peripherals including the keyboard, mouse, and external monitor. Peripherals also include external storage devices such as flash drives, USB devices, printers, cards etc.
  3. Press the power button to see if the computer turns on and boots up ok, if not, refer to Dell Knowledge Base article Computer Does Not Turn on, or is Stuck on the Dell Logo Screen.
  4. Download and install SupportAssist. For more information on how to obtain and install SupportAssist, browse to the SupportAssist for PCs and tablets page.
  5. Perform system maintenance on your computer, for more information refer to Dell Knowledge Base article Optimization and Maintenance of Microsoft Windows.
  6. Start attaching devices one at a time and test to see if the computer stops responding.
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3. Microsoft Windows Crashes, Stops, Restarts or a Blue Screen Appears

This link takes you to the Microsoft Knowledge Base article Microsoft Windows Crashes, Stops, Restarts or a Blue Screen Appears.

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4. Dell PC Diagnostics Quick Test and SupportAssist for PCs and Tablets

Note: The fastest and easiest way to identify and resolve the problem is by using our quick test online diagnostic tool. This will either fix the problem automatically, or it will guide you through the steps to resolve the problem. If the diagnostic identifies a failing part, depending on the failing part, we will immediately start the process for a free in-warranty replacement part.

Dell provides several options to maintain and diagnose your computer:

  • The Dell PC Diagnostics quick test, can find the most common issues.

  • SupportAssist, previously called My Dell, provides system updates, detects issues and sends you alerts based on your device, which makes solving and preventing problems easier than ever. This application gives you access to everything you need to take the guesswork out of maintaining PCs and tablets. For more information such as how to obtain and install SupportAssist, browse to the SupportAssist for PCs and tablets page.

  • When the computer cannot access the Internet, you can run the built-in diagnostics on your computer, for more information, refer to Dell Knowledge Base article, Run Built-In Diagnostics (ePSA) for Your System.
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5. Troubleshooting a Notebook LCD Screen That is Black, Blank or Hard to See

For information on troubleshooting a notebook LCD Screen, refer to the Dell Knowledge Base article Troubleshooting a Notebook LCD Screen That is Black, Blank or Hard to See.

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6. Inspiron 14R 5421 Specifications

For information on the Inspiron 14R 5421 Specifications, browse to the Inspiron 14R 5421 Online Manual Page, and click Specifications.

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7. Port Locations

For information on the port locations, browse to the Inspiron 14R 5421 Online Manual Page, and click Specifications.

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8. Resetting the System Setup (BIOS) to its Default Settings

Option 1:

  1. Reboot the computer.
  2. When prompted during POST, press the F2 key to enter the setup screen.
  3. On the System Setup screen, press the Right Arrow key to move to the Exit menu.
  4. Press the Down Arrow key until Restore Defaults is highlighted, and press the Enter key.
  5. Press the Enter key on Yes to Load Optimized Defaults and restart the computer.

Option 2:

  1. Reboot the computer.
  2. When prompted during POST, press the F2 key to enter the setup screen.
  3. On the System Setup screen, press the F9 key.
  4. Press the Enter key on Yes to Load Optimized Defaults and restart the computer.
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9. Wireless Networking How-to's and Troubleshooting

For how-to's and troubleshooting information on wireless networking please visit the Dell Networking and Wireless Support Center.

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10. How to Turn the Wireless Antenna On and Off on a Dell Computer

  1. Press and hold done the Fn key, then press the F2. Repeating this will toggle the wireless antenna off and on.

For more information on how to turn the wireless antenna on and off on a Dell Computer, refer to Dell Knowledge base article How to Turn the Wireless Antenna On and Off on a Dell Computer.

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11. Disabling or Enabling the Touchpad Using the Hot Key

Keyboard Key Action
Press and hold the Fn key then press the F3 key.

Table 2: Touchpad Hot Keys

For more information on how to turn the touch pad on or off, refer to Dell Knowledge base article Disabling or Enabling the Touchpad Using the Hot Key.

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12. Mouse, Keyboard or Touchpad Not Working Correctly

Refer to the following Dell Knowledge Base articles for information on how to use or troubleshoot mouse, keyboard or touchpad issues.

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13. Using and Troubleshooting the Dell Webcam and Dell Webcam Central Software

For information on how to troubleshoot the webcam on your computer, refer to Dell Knowledge base article Using and Troubleshooting the Dell Webcam and Dell Webcam Central Software.

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14. Computer Component is not Recognized

SupportAssist, previously called My Dell, detects issues and sends you alerts based on your device, This application gives you access to everything you need to take the guesswork out of maintaining PCs and tablets. For more information on how to obtain and install SupportAssist, browse to the SupportAssist for PCs and tablets page.

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15. Inspiron 14R 5421 Drivers

For information on the Inspiron 14R 5421 drivers available, browse to the Inspiron 14R 5421 Driver Page.

This article provides information on how to download drivers for the Inspiron 14R 5421 computer, "How to Download and Install a Driver"

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16. Dell Windows Support Center

This link takes you to the Dell Windows Support Center. Select the operating system you need help with.

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Identifikátor článku: SLN161947

Dátum poslednej zmeny: 05/02/2017 11:49 AM


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