Why IPad Can't Charge From PC ..

Hello Friends ,,

This time We will fix a new problem
at all it's not Huge but it's important to know it
it's ipad charging from PC

An iPhone charges just fine when plugged into a computer's USB port. The same goes for an iPod, a pocket camcorder, and any of countless other devices. So what's the iPad's problem?

Actually, the difficulty isn't with the iPad, but with the USB port: It's not supplying enough juice. The ports built into most desktops, laptops, and even powered USB hubs don't generate the 10 watts necessary to charge an iPad's battery, which is why the ‘Not Charging' message appears over the battery indicator. That's a definite bummer, as it means you can't use, say, your laptop to recharge your iPad on the road. In fact, Apple recommends finding an AC outlet and using the bundled 10-watt power adapter.

That said, lower-powered USB ports will recharge an iPad--just very, very slowly. you will need more than 10 Hours to charge your Ipad . When the tablet's screen is off, the battery does indeed draw a trickle of power. Turn the iPad back on, however, and you'll see ‘Not Charging' again. (It's kind of like yanking open the refrigerator door to see if the light is still on.)

You should be aware that many PCs pump varying wattages through different USB ports. Frequently the USB ports at the front of the PC are of lower power than the ones in the back. Before giving up, try moving to another port.

identifies the attached device and increases the power to the port. Asus makes a free tool which apparently (use at your own risk) accomplishes this on PC's as well. http://event.asus.com/mb/2010/ai_charger/ 

This is the tool you want ..
just download
install
restart
AI Charger displays in the tray with a small red 'X' on it. Clicking on it doesn't bring up anythin
But
Now plug in your ipad and Charge
Enjoy :)