Hi Dilip,
Also answering the 2nd question. If there is still a problem after trying the reset suggest you contact Amazon Support. I also had / have a problem and had communicated a problem on their Kindle support page.
This is the response I got. It suggests you leave your phone no on their website and they'll call us back.
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Hello,
I'm so sorry to hear the problems with your kindle. To better assist you
with this issue I suggest you to contact us through phone.
Please give us a call to speak with our Kindle specialist who will be
able to discuss the problem in detail and try some real-time
troubleshooting to resolve the issue to your satisfaction or see if you
need a replacement.
You can reach us by phone directly and toll free from many countries by
clicking the Contact Us option in the right-hand column of our Kindle
Support pages at:
http://www.amazon.com/kindlesupport
When you visit our website and select Contact Us, click on the "Phone" tab, enter your number, and we’ll call you right back.
Contacting us through the website allows you to verify security before a
call is placed and ensures we have your account information ready when
we call you. If your country isn’t listed or you’re unable to take
advantage of the Contact Us feature, you can call us directly at
1-866-321-8851 or
1-206-266-0927 if you're calling from outside the U.S.
We hope you can call us soon so we can help solve this problem quickly.
Best regards,
Syeda H
Amazon.com