Check and see if the windows display control panel is set at 100%. There are known issues when this setting is set to any other value. Of course, this may result in a display that is not readable on your computer...
For More Information see: FM13v02 - with fatal rendering issues!!!
This is one of many acknowledged bugs that can be found in the Known Bug List thread here in the Report an Issue section of the forum.
It can also be downloaded as a database file from: https://www.dropbox.com/s/jt09b82i0xijbu3/FMP%20Bugs.zip
Right now it's set at larger, which I believe is 200%. It's not possible to do 100% as the resolution is something like 3300x2200 or in that range, so when you run a program that doesn't support high DPI and runs at that, the text is literally so small you can barely read it.
If it's a known bug then that's okay at least, I can live with that, although I bought this machine as my FileMaker development rig while on the road! Our users are all WebDirect and it works fine there, just is unusable on the laptop itself. Just tried on my external display that the laptop is connected to and it does the same thing on there.
My issue actually doesn't sound that much like theirs, I'll send a screenshot after. Mine will work perfectly fine sometimes, like right now if I move the mouse a certain way, everything appears and looks perfect, size and all. As soon as I click somewhere, like the background or a field, half the display disappears but the rest is there. Move the mouse over that and another area disappears and reappears. So it's rather odd, as right now I have it looking perfect if I don't move the mouse. You'd think it was working as expected. I might try to download the database off our shared provider to see if running it locally helps as maybe it's a connection problem or something but doesn't seem like it.
There have been multiple reports of issues when this panel is not set to 100%. Some include things like an incorrect cursor position, for example. You can post your findings to the above bug report thread and see if the FileMaker Inc techs agree or if they think another issue might be involved.
I just returned the laptop, it's not possible to use it at 100% the fonts are unreadable as even at 200% they are still pretty small and pushing it where I had to up the size on some. So much for that!