Help about burning, please :(

[FileForFile]

sorry for my bad english before,

first, i use lite on dvd rw to burn a pc games into dvd-r.
i use 3 DVD RW at one PC,
i burn 3 DVD at the same time,
but some time after finish the burning, the DVD-R is BLANKKKK
i think i already 100% burn pc games to dvd-r, but why the disc is empty? like a new one? i still can burn a file to that disc.
and my second problem is, at the burning process 1 of my DVD-RW always stuck in 0%, 14%, e.t.c.
last one, what is the correct step to burning 3 DVD-R at the same time in the 3 DVD RW?

please help me