HP laptop won't let me change lock screen or account picture

[NYMixedChic331]

I went to change my pictures for the lock screen and the account and everytime I try to change it, it gives me a message saying "Account/Lock screen picture error. Setting the account/lock screen failed. Please try again." I'll try to put the default pictures just to see if that would work and no matter what I do, it will not change. It's so aggravating. What can I do?

[Futoji]

Hello NYMixedChic331, welcome to the HP Forums.

I see that you're looking to change the picture for your account/lock screen on your notebook. I would like to help you with this.

Could you start by providing the following:
Model and Product numbers for your notebook.
Currently installed operating system on your notebook.

The above information would allow me to better assist you with this issue.
I look forward to your reply.
Thank you for posting on the HP Forums.

[NYMixedChic331]

It's a HP Pavilion g6 Notebook PC and the product number is D1C14UA#ABA

[Futoji]

Hi,

Thank you for providing the above information.

To ensure the fault behind the error is not with Windows, I'd recommend doing a system refresh to start. Refresh Your PC to Resolve Problems (Windows 8).

And just as reference when trying to set the lock/account screen afterwards, here are two Microsoft documents:
    See pictures on the desktop, Start, and the lock screen
    Personalize your PC

I hope this helps, let me know how it goes.
Thanks.