Latitude 5414 Rugged Notebook: CPU Stuck at 400 MHz
Summary: Information about resolving an issue with C-States throttling the CPU on a Latitude 5414 Rugged notebook.
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Symptoms
Latitude 5414 Rugged notebook owners have reported that they have found the systems CPU is stuck at 400 MHz, both in BIOS and in the Windows Operating System.
Affected system
(Figure.1 Latitude 5414 Rugged Notebook)
Cause
Resolution
Dell engineers have identified that the C-States in the BIOS is throttling the CPU.
Troubleshooting Steps:
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Reboot your PC.
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Press the F2 key when the system gets to the Dell splash screen to enter into the system BIOS.
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Click on Performance and then c-states control
- You can Disable C-States and save and exit the BIOS to boot back into the Windows Operating System
Disabling C-states will enable the CPU to run at normal speeds.
Affected Products
Latitude 7212 Rugged Extreme Tablet, Latitude 7214 Rugged Extreme, Latitude 5414 Rugged, Latitude 5420 Rugged, Latitude 5424 Rugged, Latitude 7414 Rugged, Latitude 7424 Rugged Extreme, Latitude 5404 Rugged, Latitude 7202 Rugged Tablet
, Latitude 7204 Rugged, Latitude 7404 Rugged
...
Article Properties
Article Number: 000133013
Article Type: Solution
Last Modified: 17 Apr 2025
Version: 10
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