DVD does not recognise discs

some will not reconize generic disc and i hate to say this but keep trying using another disc sometimes although new disc will not be formated like they are suppose to be.

can u tell its been how long you have been facing this problem

Try opening device manager,and clicking on verything having to do with discs,then narrow it down to what you need.It might work

i am having the same problem with my fujitsu siemenbs laptop and i can see a CD/DVD icon but it just doesnt ecognise any dvd-w or dvd-rw only cd's what shal i do?

the lens has damaged or no more able to write u need to change it
dont forget to rate

Did You Try Taking off The Cover And Cleaning The lens With Rubbing ahocal

The Alba DVD recorder may not recognise any disc due to one or two of the following reason.
1, the optical pick up (lence) may be dirty or may have gone bad.
2, the cable which connects the optical pick up to the circult panel board may have go borken.

Ok, the reason is quite simple. The Philips DVD8421 does not recognise the DVD-R format.Not all DVD/CD burners read all discs. It does recognise DVD+R though. So all you need to do is use these discs instead. This should solve your problem.

Hope that helps.

I believe it only records on DVD + media.

http://www.askdavetaylor.com/
whats_the_difference_between_dvdr_dvdr_dvdrw_dvdrw_and_dvdram.html

Hi All,

I've had the "can't read disc problem" and "noise" when the
disc is turning. It's not the lens. The rubber pad/ring that the
CD/DVD sits on gets "dirty" and doesn't grab the disc well enough
and the disc slips. It's especially a problem when recording, because
it can ruin the discs, and make then unusable.

I took mine apart and cleaned the rubber ring and that solves the problem.
(for a while anyway) I think the rubber pad has hardened and lost it's grip,
so I have to clean it more and more often now.

Cleaning
1) Unplug it (I take all the cables off)
2) Take the top cover off (5 philips head screws) Don't touch any of the electronics.
3) Remove the blk plastic DVD reader cover CAREFULLY (6 philips head screws)
Don't move any of the parts on the cover or it's really hard to put back together.
4) Gently wipe off the rubber ring with a damp lint free cloth
5) Put the blk cover back on, plug it in, and test it with a disc take make it sure works.
6) Put the metal cover on and you're done.

I used to work as an electrical engineer so I feel comfortable taking this kind of stuff
apart. If you don't, you can buy a new one or have someone else clean it.

Goodluck