@KRISHNA78
Sorry, but this is just a self-help Support Community and we are not HP Tech Support, nor do we have any way to dispatch techicians to your location.
You will have to contact either HP Customer Support, or HP Tech Support, to get that assistance.
If you live in the US or Canada, contact information is on this page: http://www8.hp.com/us/en/contact-hp/phone-assist.html#section1
If you live elsewhere, contact information is on this page: http://www8.hp.com/us/en/contact-hp/ww-contact-us.html
NOTE: After you get through, stay on the line until you are finally able to talk to some one -- it can take a while!
If you have trouble finding a phone number, then try: 1 (650) 857-1501.
You can also try contacting Tech Support directly using 1 (800) 474-6836.
I am a volunteer and I do not work for, nor represent, HP