video conferencing jitters on my new HP i5 8265U

[Ann_Su]

I had a brand new Laptop 8265U and moved everything from my old ACER laptop. I start experiencing jitter , screen freeze, and audio freeze problems.  I have tried to isolate the problem in many ways and failed.    

I also found the following in error log:  

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Failed in handling the PowerEvent. The error that occurred was: System.IO.IOException: The process cannot access the file 'C:\Windows\Temp\signtool.exe' because it is being used by another process. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode) at _HPCommRecovery.Tools.Signtool.ExtractSignTool() at _HPCommRecovery.Tools.Signtool.Verify(String arg) at _HPCommRecovery.HPAHAgent.CallAgent() at _HPCommRecovery.AppSession..ctor(DateTime Current, String LogPath) at _HPCommRecovery.HPAHLogger.NewSession() at _HPCommRecovery.....

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I am not sure this is Microsoft problem or HP communication hardware problem??  Anyone know how I can isolate the problem? running any diagnostic program? 

[Ann_Su]

Forget this post. I have returned this HP laptop. Many people think this is NIC card defected.