Lenovo E420 Laptop User Manual


 
Table 4. Cong menu items (continued)
Menu item
Submenu item Selection Comments
Core Multi-Processing
Disabled
Enabled
Enables or disables
additional execution core
units within a CPU.
Note: If you are using a
computer with a single-core
processor, this item does
not appear.
Note: For Core
Multi-Processing, refer
to the instructions in
“Installing Windows XP” on
page 109
.
CPU
Intel Hyper-Threading
Technology
Disabled
Enabled
Enables or disables
additional logical
processors within a
processor core.
Security menu items
Table 5. Security menu items
Menu item
Submenu item Selection Comments
Password
Refer to “Security menu”
on page 114
and “Using
passwords” on page 59.
UEFI Update Option
Flash UEFI Updating by
End-Users
Disabled
Enabled
If you select “Enabled”,
all users can update the
Flash UEFI. If you select
“Disabled”, only the person
who knows supervisor
password can update the
Flash UEFI.
Memory Protection Execution Prevention Disabled
Enabled
Some computer viruses
and worms cause memory
buffers to overow by
running code where only
data is allowed. If the
Data Execution Prevention
feature can be used with
your operating system, then
by selecting “Enabled” you
can protect your computer
against attacks by such
viruses and worms. If after
choosing “Enabled” you
nd that an application
program does not run
correctly, select “Disabled”
and reset the setting.
120 User Guide