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HP Recommended
HP Notebook
Microsoft Windows 10 (64-bit)

My machine is gone in automatic repair loop. The error comes  there while I reinstall  the windows "SYSTEM_THREAD_EXCEPTION_NOT_HANDLED(CLASSPNP.SYS)".

When I searched this error I get information that if I change sata setting in bios,  this will be solved. 

But I can't find sata setting in my HP Notebook  laptop.  

Please solved my problem. 

 

1 REPLY 1
HP Recommended

@Bhupendra25 

Wish I had good news for you -- but I don't!

 

Automatic Repair Loop is an indication that your PC was attempting a Windows Update and failed in the process.  When that happens, MS automatically reboots the PC and tries to repair it -- but that nearly always fails.  That results in the PC failing when it reboots and restarting the repair loop.  It will do this over and over until you shut it down.

 

If your PC came preloaded with Win10, that was configured at the factory to use SATA in AHCI mode.  Your changing it to IDE mode is NOT going to fix the ailing PC.

 

The most common reason for Windows Update failure is a failing hard drive.  

 


If your PC is new enough to support UEFI, you can use these steps to test the hard drive: http://support.hp.com/us-en/document/c00439024

If not, to check the drive you have to follow these steps:
1) Press Esc key repeatedly, several times a second, while rebooting the laptop. Do NOT hold the key down, just press it over and over.
2) Eventually, you will see an HP Startup Menu -- that will look similar to the image below ...
HP Startup Menu.jpg
3) press the Function key for testing the hard drive (usually F2) and let it run.

Please report back the test results.



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