Dude,

First I would suggest you to call dell to claim warranty.
Second if this fails get the support of the seller to do that for you.
Third, dell quality a bit sucks, if you can utilize the warranty as the second owner get the owner a letter stating that he has sold/or given to you the unit.

Please upgrade the warranty due to you already start facing problem.
I don't see any problem if you able to contact seller and sort things out with him.
If your approach is considerate, I believe the seller is considerate to help you to lessen your woes.

I dunno why why second owner was unable to utilize the warranty, that is just stupid of Dell. I never found that kinda problem with HP. You just come to the service center and send the unit. Simple.

Id sure you have a lot of sifus here trying to help you out, be patient.
Even buying a new one could be problematic if you that kinda bad luck.
Regarding the DVD Drive, please try those Imation DVD/CD and see if works.
Some of the brand of DVD drive are just stupid (especially notebooks drives) and I have encountered a few one that does not work well with few disc.

Wish you all the best, cheers.

why are you guys think about stolen la what la. if you guys so picky then take extra cash and buy new and never, never ever do online trading.

dell is like that, if stolen customer will have make report to dell the item is stolen.
so when the notebook reaches dell. dell can hold it and ask the original owner top take it.

if im the buyer i just meet the owner and ask him to sign off the unit.
and call dell, pretending as the owner. get the fix to be done. simple.

you send the item to shop the warranty will be void. now thats is a loss.

seller, can call, buyer all can.
both take the initiative la.
buyer if i were u and know the seller is slow.
just call the prev owner, have chat with him and ask for his help.