when doing any program install, i get a screen corruption with vertical blocks of colour, then instant freeze, could this be a graphics problem? no graphics card as it is using graphics on main board..
With you having only internal graphics, it would likely be a motherboard issue. It does this when you attempt to install anything onto the computer? Try downloading updated drivers for the graphics accelerator. If you're not sure who makes it follow these directions:
What is the make/model # of your computer?
You can use either CPU-Z or Speccy to take the guess work out for you.