Backup problem

[Spectral]

Having bought a Writer I wanted to backup my PC games and put the originals away, using alcohol 120%. My writer can read it fine, but my normal cdrom drive cannot read it properly, it crashes during install with a read error. I then tried it on my dads PC and his writer can read it but normal cdrom cannot. I tried burning it on my dads writer and the same thing happens. I have tried to different brands of cdr. SKY and memorex. Both writers are also different brands(mine is Liteon and my dads is Sony). Both mine and my dads cdrom drives can successfully read the same games that were done at a friends house. What could be causing this? Could it be alcohol 120% causing this? It is on both mine and my dads PC. However I do not know what software my friend uses.

Thanks in advance.