Answer :
5/9 because...
Probability that the first one has a bad video card: 5/6
Probability that the first one has a failed hard drive: 4/6
5/6 x 4/6 = 20/36 = 5/9
Probability that the first one has a bad video card: 5/6
Probability that the first one has a failed hard drive: 4/6
5/6 x 4/6 = 20/36 = 5/9