I can't seem to fiind hp dv4 laptop on hp's website.
from
Wikipedia, however, this series of info came up:
dv4 can have intel or amd processors
may came with dvd+-r/rw dual layer (can read/write/rewrite dvd-r, dvd+r, dvd-rw, dvd+-rw, dual layer discs)
may came with lightscribe support.
may came with blue-ray ROM support.
I like the following blank dvd media brands as they are available locally and are cheap: Iomega, Kodak, Sony, HP.
depending on media brand, price is around 3-4 blank dvd-r/+r for around 1 $ u.s.
(at ~43 Philippine peso to 1 $).
certain video files may appear to be burned fine but when played, it will not play because they are copyrighted and you don't have the 'rights'.
if you own the original discs, you may create one back-up copy by using a dvd authoring software.
and you cannot DIRECTLY burn 1:1 an original DVD without using 'tricks' or a dvd authoring software.
I don't know the scope of copyright law in your area; may be others who have extensive dvd library who have 'converted/backed up/burned to dvd' can chip in.
(I backed up my original House tv series using
handbrake on a single computer only.)