voldemarz 0 Newbie Poster

I`m working on c program which is working in graphical mode. I use Turbo C 3.0 IDE. Until recently everything was ok, but then i gave my laptop away to the service. So I temporary borrowed one and problems apeared. Before starting the work I had to install Windows XP cause i can`t open dos graphics in full-screen in Vista. Problem is that every character except letters and 0 is printed malformed. Here is output of small graphics test program printing chars from ASCII code 32 - 255:
Output in graphics mode
Same in text mode:
Output in text mode
This is so even for program versions compiled on the previous computer (they were working as they should then).

If i change to any other font and compile program problem is gone. That could be workaround ,but I want to understand where is the problem and if possible to use default font.