Trouble With Burning DVD's please help!

Hello i just recently purchased an asus DRW-2014l1t DVD+R/RW drive and i have already been having some issues. whenever i atempt to burn a dvd using the nero8 essentials disc that came with the drive. so i go to create a dvd using the program and it starts to burn like everything is normal then i even use the verify data option as well and it says data verified. but when i try to place the dvd back into the drive to read it says the drive is unaccessable but yet if i try to use the same cd to burn again it says there is data on the disc.... i have a second drive that i placed the disc into but yet again there is nothing on the disc... can anyone explain why the data is not burning to the disc?!?!

 

I have some experience with it not long ago, and I found out the problem is not in my dvd drive but in my cd/dvd. have u tried to use another cd/dvd?