Dell Insp 640 M Manual

Using the Display31
Using the Display
Adjusting Brightness
When a Dell™ computer is running on battery power, you can conserve power by setting the 
brightness to the lowest comfortable setting by pressing  and the up- or down-arrow key on 
the keyboard.
 NOTE: Brightness key combinations only affect the display on your portable computer, not monitors or 
projectors that you attach to your portable computer or docking device. If your computer is connected to an 
external monitor and you try to change the...

32Using the Display
3Under Pick a task..., click the area you want to change, or under or pick a Control Panel icon, click Display.
4Try different settings for Color quality and Screen resolution. 
 NOTE: As the resolution increases, icons and text appear smaller on the screen. 

Using the Keyboard and Touch Pad33
Using the Keyboard and Touch Pad
Numeric Keypad
The numeric keypad functions like the numeric keypad on an external keyboard. Each key on the 
keypad has multiple functions. The keypad numbers and symbols are marked in blue on the right of 
the keypad keys. To type a number or symbol, press  and the desired key after enabling the 
keypad.
 To enable the keypad, press . The  light indicates that the keypad is active.
 To disable the keypad, press  again. 
1numeric...

34Using the Keyboard and Touch Pad
Key Combinations
System Functions
Battery
CD or DVD Tray
Display Functions
Radios (Including Wireless Networking and an Internal Card With 
Bluetooth
®Wireless Technology)
Power Management
 Opens the Task Manager window.
 Displays the Dell™ QuickSet Battery Meter. This feature 
is not supported in Dell MediaDirect. For more 
information, see Dell™ QuickSet Battery Meter on 
page 38. 
 Ejects the tray out of the drive (if Dell QuickSet is 
installed). This feature is not...

Using the Keyboard and Touch Pad35
Speaker Functions
Microsoft
® Windows® Logo Key Functions
To adjust keyboard operation, such as the character repeat rate, open the Control Panel, click Printers 
and Other Hardware, and click Keyboard. For information about the Control Panel, see the Windows 
Help and Support Center. To access the Help and Support Center, see page 13. 
 Increases the volume of the integrated speakers and 
external speakers, if attached.
 Decreases the volume of the integrated speakers...

36Using the Keyboard and Touch Pad
Touch Pad
The touch pad detects the pressure and movement of your finger to allow you to move the cursor on the 
display. Use the touch pad and touch pad buttons as you would use a mouse.
 To move the cursor, lightly slide your finger over the touch pad.
 To select an object, lightly tap once on the surface of the touch pad or use your thumb to press the left 
touch-pad button.
 To select and move (or drag) an object, position the cursor on the object and tap twice...

Using a Battery37
Using a Battery
Battery Performance
 NOTE: For information about the Dell warranty for your computer, see the Product Information Guide or 
separate paper warranty document that shipped with your computer.
For optimal computer performance and to help preserve BIOS settings, operate your Dell™ portable 
computer with the battery installed at all times. One battery is supplied as standard equipment in 
the battery bay.
 NOTE: Because the battery may not be fully charged, use the AC...

38Using a Battery
 CAUTION: Do not dispose of batteries with household waste. When your battery no longer holds a charge, call 
your local waste disposal or environmental agency for advice on disposing of a lithium-ion battery. See Battery 
Disposal in the Product Information Guide.
 
CAUTION: Misuse of the battery may increase the risk of fire or chemical burn. Do not puncture, incinerate, 
disassemble, or expose the battery to temperatures above 65°C (149°F). Keep the battery away from children....

Using a Battery39
Check the Battery Health
 NOTE: You can check battery health in one of two ways: by using the charge gauge on the battery as described 
below or by using the Battery Meter in Dell QuickSet. For information about QuickSet, right-click the   icon in 
the taskbar, and click Help.
To check the battery health using the charge gauge, press and hold the status button on the battery 
charge gauge for at least 3 seconds. If no lights appear, the battery is in good condition, and more than 
80...

40Using a Battery
To enter standby mode:
 Click the Start button, click Turn off computer, and then click Stand by.
or
 Depending on how you set the power management options on the 
Advanced tab (see Configuring 
Power Management Settings on page 41) in the 
Power Options Properties window, use one of the 
following methods:
– Press the power button.
– Close the display.
– Press .
To exit standby mode, press the power button or open the display depending on how you set the options 
on the Advanced tab....