How to fix Not Valid Error Displays before the HP Computer Starts

How to fix Not Valid Error Displays before the HP Computer Starts?
As a user of HP computer connects experts to have HP Technical Support to fix the following warning
message displays showing that the system has found an invalid serial number:
“Product Information not valid
The following product information programmed into the system board is missing or invalid.
System Board (00A) - Product Configuration”
The message might appear once the system board is replaced. This message tells you that you have
entered some wrong serial number or there is no serial number entered after replacing the system
board or another component. In order to fix the problem, you will be required to contact support tab on
this screen. Here, you will be asked to provide the fourteen-digit System Board Commodity Tracking (CT)
Number.
Follow the steps given below in order to find the CT Number:
Find the CT Number in System Information
First of all you need to turn off the computer by pressing the Power button.
Now, turn on the computer and press the Esc key continuously in every one second.
Next, you have to press F1 to review System Information.
At last, you have to find the System Board CT Number listed on the System Information screen.
Find the CT Number on the notebook system board (notebook PCs)
In order to find the number printed on the system board on your notebook computer, you need to open
the memory access door or service door. Here, the CT number is placed nearby or beneath the primary
SODIMM memory slot.

For complete instruction in order to perform the operation, refer to the Maintenance and Service Guide
for your notebook model, found in the User Guides section of your product page. In order to have more
support and guidance from the experts at HP Support Phone Number +1-877-645-7494. Here, you will
be supported by the representatives who are highly knowledgeable and are committed to delivering
best and quick deliver best and quick support.