NON WORKING NEW pIONEER dvr 113nP

That depends on the burning software that you have used. The easiest solution is to use another one and try again.
I use  http://www.softpedia.com/get/PORTABLE-SOFTWARE/CD-DVD-Tools/Windows-Portable-Applications-Power-Laser-Express.shtml

Try burning a disk, and taking the burnt disk to another computer, to see if the other computer recognizes the media as being a DVD disk.

First check the program you are using has selected the dvd-rom drive on pc.
If its selected and its still a problem then try changing to different brand of blank DVDR . I have used Tuffdisc , Bulkpaq, Datasafe, and Verbatim and few others on similar model Pioneer DVD writer and it works fine.

i have the same problem ,but when i restart my pc ,i put the disk it can read without a doult .The problem is your disk drive can't read disk when it on windows mode ,using dos and it just fine,some kind of trouble appear cause i burn too much disk in a time and it can't read next time i open computer .May be your windows problem just restart wins then put the disk in ,if it appear the green light it mean it's reading then the green light off it's mean it had identify the disk and does read it

your DVD ROM lens has became weak.
and it cannot be repaired.
But if you manage to open the DVD ROM clean the dust in it & it will start working again but be careful remember that no power should be attached to ROM.
or you can buy a lens cleaner from market and try that.
pls rate my solution
thankyou

the drive mechanism might have failed try to contact pioneer people !
OR if it is NOT in any WARRANTY then try to open the drive up !!!!!

You should empty the recycled bin in the system and delete all temporary files on it.

 Are you using an 80-conductor type ribbon cable? The new drive requires 80-conductor cable. Plus, you may need to switch the jumper on the back of the DVR drive to CS.

I just found your motherboard specs
http://h10025.www1.hp.com/ewfrf/wc/document?product=396434&lang=en&lc=en&cc=us&dlc=en&docname=c00063272

It uses SATA and Ultra DMA (80-conductor).
Is the jumper set to master?? You may need to pull the jumper off and see if the DVR drive works with it off.

If there were compatability issues with the disc it would have been unable to burn to the dvd initially, the problems you mention are a sign that the reading in the dvd is failing and there's never a solution for problems as these, as it means that a replacement is needed, as the dvd writer arent worth repairing. I had the same thing exactly, but after a while it wouldnt even acknowledge that i had a writable dvd in the drive, but was ok with cd's. I think it is down to poor quality lasers, so as to keep the dvd writer prices down.