A Sound Problem; Other Problems - Lenovo E40–30 User Manual
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Also See for E40–30:
- Hardware maintenance manual (90 pages) ,
- Safety, warranty, and setup manual (2 pages) ,
- Hardware maintenance manual (102 pages)
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I forgot my password.
Do any of the following:
• If you forget the BIOS user password, ask the system administrator to reset your user password.
• If you forget your hard disk drive password, a Lenovo authorized servicer cannot reset your password or
recover data from the hard disk drive. You must take your computer to a Lenovo authorized servicer or a
marketing representative to have the hard disk drive replaced. Proof of purchase is required, and a fee
will be charged for parts and service.
• If you forget the BIOS supervisor password, a Lenovo authorized servicer cannot reset your password.
You must take your computer to a Lenovo authorized servicer or a marketing representative to have the
system board replaced. Proof of purchase is required, and a fee will be charged for parts and service.
A sound problem
Print these instructions now and keep it with your computer for reference later.
No sound can be heard from the speaker even when the volume is turned up.
Make sure that:
• The mute function is off.
• The combo audio jack is not used.
• Speakers are selected as the playback device.
Other problems
Print these instructions first.
Your computer does not respond.
Do either of the following:
• Turn off your computer by pressing and holding the power button for four seconds or more. If the
computer still does not respond, remove the ac power adapter and the battery pack.
• Your computer might lock when it enters sleep mode during a communication operation. Disable the
sleep timer when you are working on the network.
I need to start the computer from a connected device, but the device does not appear on the boot
device list.
Check the boot mode setting in the BIOS setup utility. If the Boot Mode is set to UEFI, make sure that the
device or the medium in the device supports UEFI boot. If the device or the medium in the device does
not support UEFI boot, set Boot Mode to Legacy Support. If the device still does not appear in the boot
device list, replace with a new device or medium.
The connected external device does not work.
Ensure that:
• The external device is connected by USB cables while the computer is turned on; otherwise, your
computer might be damaged.
• When you are using a high-power-consumption external device such as an external USB optical drive,
ensure that you use the power cable that comes with the external device. Otherwise, the device might not
be recognized, or the computer might be turned off.
For more technical support information, go to:
http://www.lenovo.com/support
40
User Guide
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- User Guide
- Front View
- Replacing the Memory Module
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