My computer keeps needing to reset because of an invalid CMOS?

[Mqcha]

At least once a week, my computer stops whatever it's doing, goes to a semi-black screen (if you know, you know), and I have to fully turn off my computer. When it eventually turns back on, I get the following message:
"The CMOS checksum is invalid. The CMOS will reset to the default configuration, and the computer will restart. Afterwards, please check the BIOS setup options to see if they change. CMOS Reset (502)"
I don't understand that message whatsoever, and I don't know what to do about this, as this has been happening for months now. What's happening with my computer, and what should I do?

[A_Gayathri]

 Hi @Mqcha,

Requesting for serial Number PC/Notebook/Laptop

Welcome to the HP support community.

Please help us with the laptop serial number or the product number on a private message for further assistance.

Here is the link to find the product number:- Click here

In order to access your private messages, click the private message icon on the upper right corner of your HP Support Community profile, next to your profile Name.

Gaya1239

HP Support