[dsio]

Different games mean different disk usage patterns, which means different current draw patterns. If a game, or an action within a game allows the disk to spin down, and then spin up, that could be a major problem. If it starts madly reading from the hard disk, that may be a problem as well.

So, two questions.

1: Does your hard disk have a spin down / power off setting in your APM settings?

2: Do you actually have a hard disk running off that rail?

3: Do you have much warranty left on your card? Because you may find yourself using it.