DVD's won't read!

[Cetti]

I bought a pack of 10 DVD + RW to back up all my videos and photos , as at the moment they're on about 40 CD's.

Trouble is even though my drive clearly says DVD it just won't write anything. When I try to copy, an error message says 'windows encountered a problem when trying to copy this folder.' Does anyone have any ideas? I have replaced the pack to DVD - RW and it's exactly the same. Help please!

[ChuckFickens]

does it just say DVD on it, and not DVD Recordable or something similar.

if so it may just be a CD writer and DVD reader only

[Cetti]

The first pack that I bought had DVD + RW and I exchanged them today for a DVD - RW, hoping that might work, but the same error message appears.

[ChuckFickens]

no not the discs, the drive, if it only say DVD on it's own on the front of it then it is probably only a dvd reader

if it's a DVD writer it will normally say dvd -rw or similar on the front.

[Cetti]

The drive says DVD -RW. This is why I imagined it would be ok.
Would it be the make, only this is Memorex and usually I have Packard Bell?