Sometimes when I turn on my laptop it runs really slow, when I open the task manager during this issue the CPU usage never goes over 16%. I ran the intel extreme tuning utility and it showed the CPU clock speed as being capped at 0.4GHz. The CPU is an Intel i5 - 6200U cpu which should run at up to 2.8Ghz.
The only antivirus i am running is windows defender and malware bytes anti malware.
I found a temporary solution on Reddit which was to go into the device manager and uninstall "Microsoft ACPI-Compliant Control Method Battery" and detect for hardware changes then restart. However the issue usually comes back eventually. I have not found any way to reliably reproduce the issue and so it seems random.
Here is the reddit topic i got the temporary fix from:
Other times i turn on the laptop and it runs fine with the CPU running at up to 2.8Ghz as intended. I rang Dell technical support and they concluded that it was a software issue and not a hardware one. I tried updating drivers but they are all up to date as is the bios.
I am not sure what to try next. Any help would be appreciated.