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CPU Speed stuck at 0.4 GHZ if charger plugged out.
Latitude 5420
Hi,
I have Latitude 5420. I am dealing with the problem that once i plug out the charger, CPU is limiting itself at 0.4Ghz.
Things i have tried so far:
1-) Fresh Windows install (10)
2-) Up-to-date bios and drivers.
3-) Holding power button for resetting the cmos battery.
4-) Lastly, upon my ticket, dell change the mainboard.
Still no luck....... Still whenever i plug the charger. Laptop becomes ridiciliously slow...
JOcean
7 Technologist
7 Technologist
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12.1K Posts
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May 9th, 2024 14:43
Run diagnostics, F12 immediately at boot, and check for any battery problems. If the battery is weak or not charging properly that can cause a problem as you described.