An HP Pavilion laptop I've had for 4 years just started running into some problems a couple of weeks ago. First, the screen went out. Now it won't even work when hooked up to an external monitor. I have been given an HP Pavilion desktop computer by my mother, but she completely wiped the OS somehow, and I am left with nothing but a blinking cursor at the top left of the screen whenever I want to turn the computer on. I'd like to see if I can transfer the data on the laptops hard drive to the HP desktop. I have an external hard drive and a third computer. However, I might not be able to do so without an OS for the HP computer. And, they have already lost their installation media for the operating system that came with the computer. What should I do? Can you purchase just the installation media for any computer, or is it specific installation media that is linked with the product key in the computer firmware, and how does one do a dry data transfer of a hard drive when the computer it's in is having problems? Both computers use Windows 10. The desktop in question is also a Pavilion.