unfortunatly no, ive tryed and its because the usb plug does not take in power, so basically its only used to connect two devices, not flow power between them.
You charge a laptop so it stays powered up. If you let it go to 0 the battery will run out and your laptop won't work. So make sure you charge it when it gets low!
1. How is that a question? 2. It would be "My lap top doesn't charge when plugged in. 3. An example of a question would be "Why doesn't my lap top charge when it's plugged in? 4. Your charger has...