Table of Contents:
- Wireless Networking How-to's and Troubleshooting
- Dell Windows Support Center
- Mouse, Keyboard or Touchpad Not Working Correctly
- The Computer Stops Responding or troubleshooting slow performance issues
- Microsoft Windows Crashes, Stops, Restarts or a Blue Screen Appears
- Troubleshooting a Notebook LCD Screen That is Black, Blank or Hard to See
- How to Turn the Wireless Antenna On and Off on a Dell Computer
- Inspiron 15 (7557) Drivers
- Using and Troubleshooting the Dell Webcam and Dell Webcam Central Software
- Disabling or Enabling the Touchpad
- The Computer Fails to Start or There is No Video
- Dell PC Diagnostics Quick Test and SupportAssist for PCs and Tablets
- Specifications
- Port Locations
- Resetting the System Setup (BIOS) to its Default Settings
- Computer Component is not Recognized
This article provides information on using and troubleshooting your Inspiron 15 (7557).
1. 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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2. 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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3. 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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4. The Computer Stops Responding
- Press the Power button for at least 15 seconds to make sure the computer turns off.
- 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.
- 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.
- Download and install SupportAssist. For more information on how to obtain and install SupportAssist, browse to the SupportAssist for PCs and tablets page.
- Perform system maintenance on your computer, for more information refer to Dell Knowledge Base article Optimization and Maintenance of Microsoft Windows or Troubleshooting Slow Performance Issues.
- Start attaching devices one at a time and test to see if the computer stops responding.
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5. Microsoft Windows Crashes, Stops, Restarts or a Blue Screen Appears
This link takes you to the Dell Knowledge Base article Microsoft Windows Locks Up or an Error Occurs.
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6. 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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7. How to Turn the Wireless Antenna On and Off on a Dell Computer
Press and hold the <FN> key and then press the <PrtScr> key. 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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8. Inspiron 15 (7557) Drivers
For information on the drivers available, browse to the Inspiron 15 (7557) Driver Page.
This article provides information on how to download drivers for Dell computers, "How to Download and Install a Driver".
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9. 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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10. Disabling or Enabling the Touchpad
For information on how to turn the touch pad on or off, refer to Dell Knowledge base article Disabling or Enabling the Touchpad on a Dell Notebook.
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11. 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, perform the following steps.
- 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.
- Remove the A/C adapter from the computer and unplug the adapter from the A/C outlet.
- Remove the battery, for more information on how to remove the battery, browse to the Inspiron 15 (7557) Online Manual Page, click PDF next to Service Manual.
- Press the Power button for 15 seconds.
- Make sure the connections on the power cord and A/C adapter are firmly pressed together.
- Insert the A/C into the computer and a good A/C outlet.
- 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.
- Turn the computer off and insert the battery back into the computer.
- 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.
- Start attaching devices one at a time and testing to see if the computer will turn on.
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12. Dell PC Diagnostics Quick Test and SupportAssist for PCs and Tablets
Dell provides several options to maintain and diagnose your computer:
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13. Specifications
For information on the Inspiron 15 (7557) Specifications, browse to the Inspiron 15 (7557) Online Manual Page, click PDF next to Specifications.
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14. Port Locations
For information on the port locations, browse to the Inspiron 15 (7557) Online Manual Page, click PDF next to Quick Start Guide or Specifications.
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15. Resetting the System Setup (BIOS) to its Default Settings
Option 1:
- Reboot the computer.
- When you see the Dell logo during POST, press the <F2> key to enter the setup screen.
- On the System Setup screen, press the <Right Arrow> key to move to the Exit menu.
- Press the <Down Arrow> key until Restore Defaults is highlighted, and press the <Enter> key.
- Press the <Enter> key on Yes to Load Optimized Defaults and restart the computer.
Option 2:
- Reboot the computer.
- When you see the Dell logo during POST, press the <F2> key to enter the setup screen.
- On the System Setup screen, press the <F9> key.
- Press the <Enter> key on Yes to Load Optimized Defaults and restart the computer.
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16. 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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