Is having both DivX and XviD a bad thing?

Hello, To make a long story short, I have both DivX and XviD installed on the computer. I worry if it's a bad thing, because the last time my computer had to be taken in for repairs, it's due to a burnt out video card. My question is whether having both DivX and XviD on my computer will destroy it or not.|||naw you good throw windows7 in there while your at fking scrub