CPU Core Speed stuck at 0.80GHz Latitude e7440

[Obokenpally]

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

[raf2222]

I have the same problem on my 7440.

The CPU throttle like crazy

[SajidBhat]

Is your problem solved ?

[Rhyme]

Hello!i found the way to fix it,it happens because of putting ur charger on too long.Fix:open your charger then put it when the battery drains to 20%.I tested it in dell vostro 3450 and it worked.Hope I help you.note:put the charger off before boot.

[arso96]

Indeed, it worked for me the time i had this issue ! 

https://appsync.biz/dafont/ https://downloader.vip/mapquest/ https://appsync.biz/filehippo/

[dimqa]

Hello guys. Your assistance would be much appreciated. I have an Alienware R17 i7-4800MQ 2.70 GHz.

I am having the same issue, my CPU performance stucks at 0.78 Ghz. I did follow your advice: unplugged my battery charger and noticed straight away, that CPU increased and I could see the difference in my performance. I also restarted my computer with 16% of the battery life (unplugged). After windows loaded up, I've plugged it back in and CPU still went back to 0.78Ghz. 

As a result I now have 0% of battery plugged in, and it's not charging. I did try to unplug, take the battery away and hold power button for 20 seconds. My battery is still not charging. Also I have tried to run Windows without my battery, still same 0.78 Ghz… 😞

[romkis]

It's bios problem. I found how to go full speed again. I go Start menu -> power -> sleep. Wait till computer sleeps. Than power up from sleep pressing power button. Thats it.

[transgenix]

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.

[criticalrio]

Thank you guy.. you are completely right.. I've been struggling with this issue for more than 1 year and only solved by Troutlestop but even using this we could feel a lag and an little slower feeling . I just now drop out the battery and the processor automatically increase from 0.78 to 3.0ghz fck dam.. 1 year suffering for a simple solution Brgds, Flavio

[olc123]

I have a 7440 here with same problem. cpu stuck @0,78GHz. Battery removal does not help. Another battery does not help. Another charger does no help. Downloaded all bioses available, installed them all from A01, nothing happens. Only throttle stop can get it running @Speed again. Havent seen any battery or charger warnings nor errors. Any hope to get it running without throttlestop?