Laptop running very slow after battery replacement. CPU running at 0.38GHz rather than 3.06GH

[88Jason]

Laptop running very slow after battery replacement. CPU running at 0.38GHz rather than 3.06GH(ON POWER PLUG)

[BeemerBiker]

1 -Install and run the latest diagnostics.  If your PC runs too slow to do the update then use another PC and take the option to create a USB boot for the install.

HP releases newer UEFI diagnostics periodically.
When you select F2 during boot you are requesting UEFI diagnostics.
There is an updated diagnostics package here

https://support.hp.com/us-en/help/hp-pc-hardware-diagnostics
Look for the phrase 'issues outside the OS',
Expand the'+'symbol and click the DOWNLOAD button.
Install the new UEFI diagnostics on the PC with the problem

2 - Get a battery report and see if the battery is genuine.

Please run the battery report and post the summery if you want
you run the battery report by bringing up the administrator command window and running

powercfg/batteryreport

as shown below


After entering that explorer line you should see something like the following. You will have to click on it as it is long
http://stateson.net/docs/SP4_battery-report.html
You can use the WindowsKey + shift + S to copy and paste a small image if you want.

[BeemerBiker]

I have not heard back from you.  Were you able to fix the problem?