Ok, at this point an antivirus would be good just in case.First go to your computer.if you got it on the correct format, You will see a Machine icon on the very top left of your list. one collum to the side you will see a name that changes with computer being used, for example, since i use an acer laptop, the name would be ACER (C:), and a row down it would be ACERDATA(D:), now look at free space further to the right, you need to have at least a few GBs, more than 3 is good, if you have ANY NUMBER without GB, You have verry little room, and the room that MsPaint projects take overcrowds the file. if this is notthe case then run your Anti-virus and hope it's not paintAIDS XD