"changed the resolution to full"
You dont mean fullscreen or? you mean you have a 1000x1000 screen and choosen a 5000x5000 resolution? (which isnt possible anyway) or you mean you have a 5000x5000 resolution and choosen a 100x100 ?
Ive tested it and i can see on both things something.
BUT i can help you i think even if i dont know what do you mean exactly
EDIT: this is without searching files and so on
press ^ key (left of numberrow 1)
type: screenres <your screen weidth> <your screen height> (e.g. /screenres 1680 1050)(the / stand there automaticaly when pressing ^ its the command line)
press ESC and apply or close RE and start again