Charge an iPad on MacBook running Win7 There are half a dozen questions here why the iPad doesn't charge (or displays this at least) on most Windows machines. I have one more to add.

Of course my iPad (1st gen) does charge on my MacBook (late 2008) under Mac OS X. However, when I boot Win 7 in Boot Camp, it says "not charging".

As I see, the logic board is capable to deliver sufficient power. Why does this change under Windows? And what could I do about this, since I do need to use Windows sometimes and I'd like to charge my post-PC device then.
Despite the fact that your iPad says it's not charging under Windows, it will in fact charge if the display is off. Check your battery percentage, attach the iPad and turn off the display (standard locking by pressing the power button once); check back in 30 minutes or so and you'll see that you've definitely gained several percent, as much as 10% in that time.

As to why the iPad indicates that it's charging under OS X but not under Windows I cannot say. Fortunately it's lying. :)