Your PC/Device needs to be repairrd

[AsifQureshi]

Please help me fixing the following error

The operating system couldn't be loaded because the system registry file is missing or contains error. 

File :\windows\system32\config\system

Error code : 0xc0000225

You'll need to use recovery tools. If you don't have any installation media (like a disc or USB device), 

contact your PC administrator or PC/Device manufacturer. 

Press Enter to try again

Press F1 to enter Recovery Environment

Press F8 for Startup Settings

Press Esc for UEFI Firmware Settings

[WAWood]

@AsifQureshi 

This error code means Windows has crashed.

This issue is often due to a failing drive.

So, let's check that first, because if it is failing, it would need to be replaced and there is no point then in doing anything else until we confirm that.

If your PC is new enough to support UEFI, you can use these steps to test the HDD (Hard Disk Drive): http://support.hp.com/us-en/document/c00439024

If not, to check the HDD 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
3) Press the Function key for testing the hard drive (usually F2) and let it run.

If the drive checks out OK, then report that and I can provide you options for reinstalling Windows on your PC.

Please note that if your model has an SSD instead of an HDD, these diagnostics might not work properly.