my internet speed is slow

my internet speed is slow but its not a prb from wifi and isp but in my pc.
is the VPN which is discconected now was the prb?

Yes, a VPN (Virtual Private Network) could have been the issue, even if it is currently disconnected. Here's why:

VPN Settings or Software Issues: Sometimes, even if the VPN is disconnected, the VPN software might still be running in the background, altering network settings or adding extra overhead that slows down your connection.
DNS Settings: Many VPNs change your DNS server settings when connected. If those settings remain altered after the VPN disconnects, it can cause slower internet speeds or connection issues.
Firewall or Antivirus Integration: Some VPNs integrate with firewalls or antivirus programs, which can continue to filter or restrict traffic even after the VPN disconnects.
Network Adapters: Some VPNs install virtual network adapters or drivers, which may interfere with your default internet settings.

To ensure your PC's internet speed is not being affected by the VPN:

Restart Your PC: A restart often resets any temporary configurations left behind by the VPN.

Check Network Settings:

Open your network settings and confirm the correct DNS settings are being used (e.g., set it to "Obtain DNS server address automatically").

Reset your network stack using these commands in the Command Prompt (as Administrator):

     netsh int ip reset
     netsh winsock reset
     ipconfig /flushdns

Uninstall the VPN: If the VPN software is no longer in use, consider uninstalling it to rule out interference.
Update Network Drivers: Ensure your network drivers are up to date.
Speed Test: Perform a speed test before and after troubleshooting to verify improvements.

If the VPN is essential, you may want to test a different VPN provider to see if it performs better.