Pioneer DVR 111 Wount Read A DVD-R That Has A ISO File One it

These Are My Pc Specs:
CPU:Intel(R) Pentium(R) D CPU 2.80GHz
Mobo:MSI P4N SlI XE
CD-ROM/DVD : PIONEER DVD-RW DVR-111 (CD 40X Rd, 40X Wr) (DVD 5X Rd, 5X
Wr)
Soundcard: SounCreative SB Audigy 4
Windows System : Microsoft Windows XP/2002 Professional 5.01.2600
(Service Pack 2)
My Problem Is that My cousin downloaded a game form and burned it on a
dvd-r but now My pc can't recognize the dvd no more It's telling me
about a redundancy error check or something like that but when I put it
on a friend of mine's pc it reads it very well. The game it self is an
Iso file burned on the dvd. What is my problem?.
On more thing These are the supported cd's and dvd's that my dvd rom
can read:
DVD:
DVD-ROM (Single & Dual Layer, Single & Dual Sided)
DVD-RAM (Ver 2.0, 2.1 & 2.2, non-cartridge version)
DVD-R, DVD-R DL (Dual Layer), DVD-RW
+R, +R DL (Double Layer), +RW
CD :
CD-ROM Mode 1, CD-ROM XA Mode 2 (Form 1, Form 2)
CD-Text, Photo-CD (Single & Multiple Session), CD-DA, CD-Extra,
CD-Text, Video CD, CD-R, CD-RW (including HS, US, US+)

 

Redundancy error check means it's tired of trying to read the data and
has finally given up.