The problem with installing Windows 7 is Windows 10

[Desty]

Hello, I tried to install Windows 7 instead of Windows 10, but when booting from a flash drive, to install Windows 7, an installation screen appeared, but there is no mouse cursor, and I can not do anything! There is not even a mouse cursor, there is no red indicator, the keyboard also does not work. In general, the Mouse with the keyboard works in the already loaded Windows 8, 8.1, and 10 system. I tried to rearrange the wires of the mouse and keyboard from the USB3.0 connectors to the USB2.0 connectors, the same result. Tried to change the BIOS settings, but also nothing. I tried to install the driver in the installer, but the result is the same. For almost a year now I have been trying to install this system, and all is in vain and failure. Please help, help is needed very much.

[WAWood · Accepted solution]

@Desty 

According to the HP drivers page for your PC, it came preinstalled with Windows 10. If you remove or overwrite the original Win10 on your PC with Win 7, you are going to encounter serious problems as there are no HP Win7 drivers for the new hardware that comes with new machines.

MS supplies drivers that provide only basic functionality. This means that some of the hardware functionality is likely NOT to work if you force a downgrade. That includes functions like the touchpad, WiFi, switchable graphics, USB ports -- to name the functions commonly reported here.

That said, someone else might come along and point you to Win7 drivers for other model PCs that that will work with yours -- but if that does not happen, you will then be stuck with a PC with limited functionality as HP is not writing Win7 drivers for their new Win10 PCs.