Please send me a PM (click on the envelope icon at the top right of the page) with your service tag and I'll look into the issue for you.

Thanks

Does the system recognize the AC adapter, or does it show "unknown"?  F2 at powerup to check.

Hi All,

My Latitude E7440 has the same issue -> CPU is extremely slow under all activity and Windows Task Manager  shows speed as 0.78Ghz 

Change power plan from Balanced to High performance does not help.

Bios A25

Windows 10x64, CPU i7-4600U, RAM 8 Gb, SSD

Dell AC adapter is recognized, 130 watt - I've tried a few AC adapters and dock stations taken from colleges - the same issue :(

Any help ?

I have the same issue with my latitude e7440  core i7 4600u , its stuck at 798mhz clock speed at full throttle, has anyone fixed this issue?

Currently on a23 was going to update to a25 but waiting until i get a new battery as mines dead and i dont trust the power grid. Specs are as follows

Core i7 4600u

8gb ram 1600mhz ( 1 stick )

Windows 10 pro

128gb ssd

 My idea was to flash bios to A01, and work up from there all the way to A25, that has fixed some peoples issues, i havent tried it yet but maybe someone here can, and can verify

I have the same problem on my 7440.

The CPU throttle like crazy

Is your problem solved ?

Your laptop had a voltage problem on the battery.
The system blocked the core at 0,8 mHz for security.
But he never come back to initial.
to solve the problem, remove the battery.
If not result, install Throttlestop and disable the BD PROCHOT setting.

Hey there! It´s been a while since this incident, but it turns out I got a refurbished Dell E7440 recently, same model as the one in the post, and I have the exact same problem. The place where I bought it claims that it is normal on this model to work that way, is that right?

Thanks!