Service Manual

Table 17. System setup options—Virtualization Support menu (continued)
Virtualization Support
DMA Protection
Enable Pre-Boot DMA Support Control Pre-Boot DMA protection for both internal and external ports.
By default, the option is enabled.
Enable OS Kernel DMA Support Controls Kernel DNA protection for both internal and external ports.
By default, the option is enabled.
Table 18. System setup options—Performance menu
Performance
Multi Core Support
Active Cores Enables to change the number of CPU cores available to the operating system.
By default, the All Cores option is enabled.
Intel SpeedStep
Enable Intel SpeedStep Technology Enables the computer to dynamically adjust processor voltage and core
frequency, decreasing average power consumption and heat production.
By default, the option is enabled.
C-States Control
Enable C-State Control Enable or disable the CPU's ability to enter and exit low power states.
By default, the option is enabled.
Intel Turbo Boost Technology
Enable Intel Turbo Boost Technology Enable or disable Intel TurboBoost mode of the processor.
By default, the option is enabled.
Table 19. System setup options—System Logs menu
System Logs
BIOS Event Log
Clear BIOS Event Log Displays BIOS events.
By default, the Keep Log option is enabled.
Updating the BIOS
Updating the BIOS in Windows
About this task
CAUTION:
If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it
will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the
system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an
unnecessary operating system re-install. For more information on this subject, see Knowledge Article: https://
www.dell.com/support/article/sln153694
Steps
1. Go to www.dell.com/support.
BIOS setup
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