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No sound from speakers or speakers produce buzzing or scratching sound.
Ensure that your computer has not been muted. Access the Start Menu by left-clicking the Start button, located at the bottom left-hand corner of your Desktop screen. Search for “adjust system volume” to open the Volume Mixer. Ensure that the speakers are turned all the way up. Test by playing a song or a video that contains audio.
Ensure your audio driver has not been corrupted or needs to be updated. Within your Start Menu, search for “manage audio devices” to open your Sound settings. Under the Playback tab, right-click your default Speakers and select Properties. Under the General tab and within the Controller Information, select Properties. Check your Device status to ensure the device is working properly. Select the Driver tab and check if your driver needs to be updated. If there is an update available, left-click Update Driver and follow the steps to update your audio driver.
Test your internal speakers by inserting headphones into the audio jack located on the right side of your laptop, next to the USB and HDMI port. If the audio coming from your headphones is clear, then the speakers may be defective and need to be replaced.
Keyboard Not Working
Keyboard does not respond or types incorrect characters.
In your Start Menu, search for Device Manager. If you cannot search for your Device Manager with your keyboard, left-click your File Explorer button located on the lower left of your screen next to the Start button. Select Open Control Panel -> Hardware and Sound. Select Device Manager under your Devices and Printers. Select Keyboards and select the device that appears. Check the Device status to ensure the keyboard is working properly. If the device is not working, select the Driver tab and update your driver software.
Defective or Disconnected Keyboard
If your malfunctioning keyboard is not software related, the keyboard may have become disconnected internally or needs to be replaced.
Failure to Charge or Power On
Device dies quickly after unplugging charger or does not power on when connected to a power source.
If your laptop powers on, but dies quickly after unplugging your power cord, the problem is most likely your Battery. Check the device page for instructions on how to remove the battery. After you remove the battery, brush away any dust that may be interfering with the connection.
Unplug your power cord and hold down the power button for 20 seconds. Replace the battery, plug in your AC/DC adapter and look for the orange indicator to ensure your laptop is charging. Close your laptop and let it charge overnight.
Ensure the charging indicator is still lit and power up your laptop. Remove your power cord. If your laptop dies immediately, or within a few minutes, your battery is most likely faulty or nearing the end of its life and needs to be replaced.
Faulty AC/DC Adapter
If your computer fails to power on, your issue may be your power cord. Check the back of your laptop and ensure that the DC voltage(V) and current(A) match the output of your AC/DC adapter.
Plug in your power cord to your device. If there is no orange charging indicator, then your device is not receiving a charge. Use a multimeter to test your power cord, or use your power cord on another device. If your power cord does not work, it will need to be replaced.
If your adapter is working, the problem may be a blown fuse. Use a multimeter to verify that there is voltage reaching your motherboard. Now use your multimeter to check if there is voltage across your laptop fuse. If there is no voltage across your fuse, then the problem is likely a blown fuse that needs to be replaced.
If your laptop is not powering on, your AC/DC adapter is functional and your fuse is not blown, the issue is most likely a malfunctioning motherboard that needs to be replaced.