yep, but hes talking about using the one on laptop right?
Wow, for someone who supposedly uses Photoshop, you seem to be completely ignorant on current technology. Have you even bothered to check out the machines I listed?
To the OP: if your friend wants to use photoshop or other drawing software on a mobile pc, she should concentrate on tablets and convertible systems running Windows. There are several that are either purposely designed or can be used for photoshop. And once you've used PS or any of the drawing software on a pressure-sensitive tablet, you cannot go back to a mouse.
The granddaddy of PS tablets is the Wacom Cintiq Companion:
http://www.wacom.com/en-ca/products/pen-displays/cintiq-companion-2
Note that there is a difference between the Cintiq and Cintiq Companion. The Companion is a full-fledged tablet pc, while the plain Cintiq is just a pressure-sensitive screen. This machine is pretty much designed for photoshop. It does not come with a keyboard, and is not very good for typical desktop/productivity/general computing uses. However, for photoshop or other professional drawing software, it is excellent.
Microsoft also makes the Surface line of tablets that work well with PS. The Surface Pro 4 is a tablet that can also function as a laptop, while the Book is more a laptop that can also function as a tablet.
https://www.microsoft.com/surface/en-us?ocid=OCTEVENT_MSCOM
There are other machines that also fit in the same category. Here is a list of current machines:
http://forum.tabletpcreview.com/thr...0-tablets-and-convertibles-with-stylus.67533/
The same forum also has an Artist section where tablet use is also discussed, although it is heavily slanted towards the Wacom tablets.
http://forum.tabletpcreview.com/forums/artists.1067/
Finally, there are other sites dedicated to using these tablets for artists and illustrators. Here is one:
http://surfaceproartist.com/