Netbook resolution problem

[headcase]

My youngest has broken his netbook yet again, this time he has managed to set it so all of the writing and icons are far too small to read, it looks to me like he has set the resolution way too high for the screen but the mouse pointer appears to be the correct size. When it is booting up the word 'Welcome' is smaller than the mouse pointer and his desktop wallpaper is just a little square at the top left hand corner of the screen!

Ive tried adjusting the resolution but the window is just too small to navigate!

Ive tried booting into safe mode but its exactly the same there.

Is there a shortcut to send it back to some default mode?

Bleedin kids

[headcase]

Hmm, i kinda think its gone faulty now... it booted normally for some unknown reason so i made sure the res was set to 1024x768 and all of the font sizes were readable and it was perfectly fine until i restarted it, then it went back to everything being real small....
ive tried every option on the boot menu, safe mode dosent make a difference,

any ideas?

Its a Tosiba NB200 btw.