Hello Zupreme,
Good to see you in Microsoft Community.
I looked up the information and found the CTRL + SHIFT + P is used to start the Windows PowerShell console (PowerShell.exe) in PowerShell ISE. Visit Keyboard Shortcuts for the Windows PowerShell ISE - PowerShell | Microsoft Learn for more details.
Additionally, did you open the Power Shell directly or call it in Windows Terminal? Because I can use these shortcuts in Windows Terminal.
Ctrl + ,
You can visit Windows Terminal - Microsoft Store Apps and click "Get in Store app" to install Windows Terminal.
If anything is unclear, please do not hesitate to let me know.
Best Regards,
Mosken_L - MSFT | Microsoft Community Support Specialist