Toshiba C70b User Guide

121If Something Goes Wrong
The Windows® operating system is not working
Reset your computer
❖All of your personal files and apps are removed
❖Your computer settings are changed back to their 
defaults
For more information, see “Reset your PC” on page 52.
Advanced options
Choosing this option presents you with another set of 
options:
System Restore
❖System Restore allows you to use a Restore point to 
return the computer to a state at which it was performing 
properly. Restore points may be created:...

122If Something Goes Wrong
The Windows® operating system is not working
❖Enable boot logging
Creates a file that lists all the drivers that are installed 
during startup
❖Enable Safe Mode
Starts Windows
® with a minimal set of drivers and 
services. If the computer starts and runs in Safe Mode, 
you will know the Operating System is most likely 
working properly and that you should look to third-party 
applications or drivers for the source of your problem.
❖Disable driver signature enforcement
Allows...

123If Something Goes Wrong
Fixing a problem with Device Manager
The Windows® operating system can help you
If the operating system has started properly but you still have 
a problem using your computer, the online Help can assist 
you in troubleshooting the problem. Getting to the online 
Help will differ depending on which interface you are in:
❖
Start screen—Type Help and Support
As soon as you begin typing, the search feature 
automatically begins.
❖
Desktop—Press the F1 key
When the “Windows Help and...

124If Something Goes Wrong
Power and the batteries
2Click or touch Device Manager.
The Device Manager screen appears.
3From the list of device(s), double-click or touch the 
device type.
4To view the device(s) installed, double-click or touch the 
device.
The operating system displays the device Properties 
dialog box, which provides an array of tabs. They may 
include:
❖The 
General tab, which provides basic information 
about the device.
❖The 
Resources tab, which lists resources assigned 
to the...

125If Something Goes Wrong
Power and the batteries
Here are some typical problems and how to solve them:
The AC power light does not come on when you 
plug in the AC adaptor and power cord/cable.
Make sure the AC adaptor and power cord/cable are firmly 
plugged into both the wall outlet and the computer.
If the AC power light still does not come on, check that the 
wall outlet is working properly by plugging in a lamp or other 
appliance.
The AC adaptor and power cord/cable work 
correctly, but the...

126If Something Goes Wrong
Keyboard problems
After a period of time, the battery will lose its ability to 
perform at maximum capacity and will need to be replaced. 
This is normal for all batteries. To purchase a new battery 
pack, see your accessories information included with your 
computer, or visit the Toshiba Web site at 
accessories.toshiba.com. Refer to this site often to stay 
current on the most recent software and hardware options 
for your computer, and for other product information.
For more...

127If Something Goes Wrong
Display problems
If you are using an external monitor:
❖Check that the monitor is turned on.
❖Check that the monitor’s power cord/cable is firmly 
plugged into a working power outlet.
❖Check that the cable connecting the external monitor to 
the computer is firmly attached.
❖Try adjusting the contrast and brightness controls on the 
external monitor.
❖Press 
F4 to make sure the display priority is not set for 
the built-in screen.
The screen does not look correct.
Choose a...

128If Something Goes Wrong
Disk or storage drive problems
The display mode is set to Simultaneous and the 
external display device does not work.
Make sure the external monitor is capable of displaying at 
resolutions of 1280 x 800 or higher. Devices that do not 
support this resolution will only work in Internal/External 
mode, and not simultaneous mode.
Disk or storage drive problems
Problems with the storage drive or with external media 
usually show up as an inability to access the drive or as...

129If Something Goes Wrong
Disk or storage drive problems
6Click or touch the Check button.
The Error Checking box appears.
The system will alert you if you need to scan the drive.
7Even if you do not need to scan the drive for errors you 
can scan by clicking or touching 
Scan drive.
Error-checking tests and repairs the storage drive.
Your hard disk seems very slow.
If you have been using your computer for a long time, your 
files may have become fragmented. Run Disk Defragmenter. 
To  d o  t h i s :...

130If Something Goes Wrong
Optical disc drive problems
Optical disc drive problems
You cannot access a disc in the drive.
If the optical disc drive is an external drive, make sure the 
two USB cables or the AC adaptor cable are properly 
connected to the computer and refer to the documentation 
that came with your drive.
Make sure the tray that holds the optical disc is closed 
properly. Press gently until it clicks into place.
Open the tray and remove the disc. Make sure the tray is 
clean. Any dirt or...