According to your description, I suggest you refer to the following information:

A, about the system installation problem

Excuse me, do you mean to install a win7 system on the basis of win8 system?

1. In order to ensure the stability and security of notebook operation, HP officials do not recommend users to install dual systems, and there is no information about dual system operation. Consider using a single pre-installed system;

2. The operating system itself has no relevant digital signature, so you don't need to verify it;

However, if the ghost system is installed, because the ghost system has been modified by the manufacturer, some files may be lost or other drivers and software may be integrated, so the digital signature may not be verified after installation.

3. If it is convenient, you can also provide specific error information or pictures through the questioning function of Baidu platform, so that we can further follow up your question;

Second, about system activation.

Excuse me, do you mean that after the dealer helps you run the one-button recovery function, the system displays the inactive state?

Then regarding the activation of pre-installed win8, you can try to contact Microsoft directly to activate it. Microsoft's customer service phone number is 800-820-3800.

I hope the above reply can help you.

If the above information can't solve your problem, you can log on to the HP online chat room and consult an online engineer to help you solve the problem further.