Lenovo Ideapad 100s 14ibr User Guide

							Chapter 3. Recovery system
17
I uninstalled a preinstalled software, but there is no significant increase in the free drive space.
The copy of Windows running on your computer may be WIMBoot-enabled. For computers  with WIMBoot-enabled Windows, the majority of  files needed for preinstalled software are  
installed on the Recovery Partition and won’ t be deleted through normal uninstallation.
What happens if I attempt to delete or modify the Recovery Partition?
Attention: •Do not delete or modify the Recovery Partition on a WIMBoot-enabled computer.
If the Recovery Partition is deleted or modified, you may not be able to restore Windows to the  factory status. For comp uter models on which WIMBoot is enabled, deleting the Recovery  
Partition may cause Windows to fail to start.
How can I determine whether the Windows running on my computer is WIMBoot enabled?
WIMBoot technology is normally enabled on copies of Windows 10 Update running on SSD (or 
eMMC) -only computer models. To check your computer,
1On the charms bar, click the  Search charm.
2Make sure Settings or Everywhere is selected as the search scope and type Disk  
Management  in the search box.
3Click the search result and the Disk Management program starts.
If Wim Boot is labeled on the Windows partition, WIMBoot is enabled on your copy of Windows. 
						

							18
Chapter 4. Troubleshooting
Frequently asked questions  
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This section lists frequently asked questions by category.
 Finding information
What safety precautions should I follow when using my computer?
The Lenovo  Safe
 ty and General Information Guide  which came with your computer contains safety 
precautions for using your computer. Read and follow all the precautions when using your 
computer.
Where can I find the hardware sp ecifica

tions for my computer?
You can find the hardware specification for your  computer on the printe
 d flyers which came 
with your computer.
Where can I find warranty information? For detailed warranty information on this machine, please visit below website to check out: 
support.lenovo.co m/warrantystatus.
Drivers and preinstalled software
Where are the installation discs for Lenovo pr einstalled software (desktop software)?
Your computer did not come with installation  discs f
 or Lenovo preinstalled software. If you 
need to reinstall any preinstalled software, yo u can find the installation program on the D 
partition of your hard disk. If you cannot find the installation program there, you can also 
download it from the Lenovo consumer support website.
Where can I find drivers for the various h a

rdware devices of my computer?
If your computer is preinstalled with a Windows  
 operating system, Lenovo provides drivers for 
all the hardware devices that you need on the D partition of your hard disk. You can also 
download the latest device drivers from the Lenovo consumer support website.
 BIOS setup utility
What is the BIOS setup utility?
The BIOS setup utility is a ROM-based software.  It displa
 ys basic computer information and 
provides options for setting boot devices, security, hardware mode, and other preferences.
How can I start the BIOS setup utility? To start the BIOS setup utility:
1Shut down the computer.
2Press the Novo button and then select  BIOS Setup.
How can I change the boot mode? There are two boot modes:  UEFI
  and Legacy Support. To change the boot mode, start the BIOS 
setup utility and set boot mode to  UEFI or Legacy Support  on the boot menu. 
						

							Chapter 4. Troubleshooting
19
When do I need to change the boot mode?The default boot mode  for your c
 omputer is UEFI mode. If you need to install a legacy operating 
system, such as Windows, Linux or Dos, etc. (that is, any operating system before Windows 8) on 
your computer, you must change the boot mode to  Legacy Support. The legacy operating system, 
such as Windows, Linux or Dos, etc. cannot be installed if you dont change the boot mode.
 Getting help
How can I contact the customer support center?
See “Chapter 3. Getting help and service” in the Lenovo  S
 afety and General Information Guide. 
						

							20
Chapter 4. Troubleshooting
Troubleshooting  
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Display problems
When I turn on the 
computer, nothing appears 
on the screen. •
If the screen is blank, make sure that:
- T
he AC power adapter is connected to the computer, and 
pl ugged into a workin

g electrical outlet.
- The computer power is on. (Press the Power button again  for c o

nfirmation.)
• If these items are properly set, and the screen remains blank, 
ha

ve the computer serviced.
The screen goes blank 
while the computer is on. •
Your screen saver or power management may be enabled. Do 
on e of the follo

wing to exit from the screen saver or to 
resume from sleep mode:
-Touch the touchpad.
- Press any key on the keyboard.
-Press the Power button.
-Press  F9 ( 
 ) 

to confirm whether the backlight of the 
LCD screen has been turned off.
BIOS password problems
I forgot my password. •If you forget your user  pass word, ask the system 
administrator to clear your user password.
• If you forget your hard disk drive password, a Lenovo 
aut h

orized servicer cannot reset your password or recover 
data from the hard disk. 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 ch arged for parts and service.
• If you forget your admini
stra
 tor password, a Lenovo 
authorized servicer cannot re set 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. 
						

							Chapter 4. Troubleshooting
21
Sleep problems
The critical low-battery 
error message appears, 
and the computer 
immediately turns off.•
The batte ry p
ower is getting low. Connect the AC power 
adapter to the computer.
The computer enters sleep 
mode immediate
 ly after 
Power-on self-test (POST). •
Make sure that:
- The battery pack is charged.
- The operating temperature is within the acceptable range.  See “Chapter  2. 

Use and care Information” in the Lenovo 
Safety and General Information Guide .
Note:If the battery pack is charged and the temperature  is within range, have the computer serviced.
The computer does not 
return from sleep mode, 
and the computer does 
not work.•If your computer is in sleep mode, connect the AC power 
adapter to the computer, then pr
ess any key or the Power button.
•If the system still does not return from sleep mode, stops 
responding, or cannot be turned off, reset the computer. 
Unsaved data may be lost. To reset the computer, press and 
hold the Power button for four seconds or more. If the 
computer is still not reset, remove the AC power adapter.
Display panel problems
The screen is blank. •Do the following:
- I
f you are using the AC power adapter or the battery pack, 
and the  b

attery status indicator is on, press  F12 ( 
 ) 

to 
make the screen brighter.
- If the power indicator is blinking, press the Power 
 button to 
resume from sleep mode.
- If the problem persists, follow the solution in the next  pr ob

lem “The screen is unreadable or distorted.”
-Press  F9 ( 
 ) 

to confirm whether the backlight of the 
LCD screen has been turned off.
The screen is unreadable 
or  distorte
d. •
Make sur
 e that:
- The display device driver is installed correctly.
- The screen resolution and color quality are correctly set.
- The monitor type is correct.
Incorrect characters 
appear on the screen. •
Is the operating system or programs installed correctly?  
If
  they are installed and configured correctly, have the 
computer serv iced. 
						

							22
Chapter 4. Troubleshooting
Sound problems
No sound can be heard 
from the speaker even 
when the volume is 
turned up. •
Make sur e that:
- The Mute function is off.
- The combo audio jack is not being used.
- Speakers are selected as the playback device.
Battery pack problems
Your computer shuts down 
before the battery status 
indicator shows empty.
-or-
Your computer operates 
after
  the battery status 
indicator shows empty. •
D
ischarge and recharge the battery pack.
The computer does not 
oper
 ate with a fully 
charged battery pack. •
The surge protector in the battery pack might be active.  
Turn off the computer for one minute to reset the protector; 
th
en turn on the computer again.
A hard disk drive problem
The hard disk drive does 
not work. •
Make sure that the hard disk drive is included in the  Boot 
menu in the BIOS se tup utility correctly.
A startup problem
The Microsoft® Windows 
operating system does  
not start. •
For details, see “Recovery system” on page 16.
Recovery System problems
Failure to restore system 
partition to factory default. •
The system partition (e.g. the partition size or the drive 
capacity of C) has been modified. 
						

							Chapter 4. Troubleshooting
23
Other problems
Your computer does not 
respond.•
To turn off your computer, press and hold the Power button 
for four seconds or more. If the computer still does not 
respond, remove the AC power adapter.
• Y
our computer might lock when it enters sleep mode during 
a communication operation. Disable the sleep timer when 
you are working on the network.
The computer does not 
start fr
 om a device you 
want. •
See the  Boot m enu of the BIOS setup utility. Make sure that 
the BIOS setup utility is set so  that the computer starts from 
the device you want.
• Al
so make sure that the device from which the computer 
starts is enabled. Make sure that the device is included in the 
Boot  menu in the BIOS setup utility correctly.
• Whil
e turned off, press the Novo  button to select the device 
you want the computer to start from.
The connected external 
device doe
 s not work. •
Do  not connect  or disconnect any ex ternal device cables other 
than USB while the computer power is on. Otherwise, you 
might damage your computer.
• When
 using high power consumption external devices such 
as an external USB optical disk drive, use an external device 
power adapter. Otherwise, the device may not be recognized, 
or the system may shut down as a result. 
						

							24
Trademarks
The following terms are trademarks or registered trademarks of Lenovo in the United States, 
other countries, or both.
Lenovo
ideapad
Microsoft and Windows are trademarks of Microsoft Corporation in the United States, other 
countries, or both.
Other company, products, or service names may be trademarks or service marks of others. 
						

							©Lenovo China 2015
en-US
Rev. RP01