Unable to boot from CD/DVD drive

[tarung1793]

hi,
thanks for the previous problem solution
but here is a new one.

my computer becomes very slow to work with, therefore i decided to repair my win xp but when i tried to boot my computer thru the xp cd, the computer just shows a black screen for 5-6 secs and then boots normally from HD starting win xp. i have checked my BIOS boot configuration and it was correct, the cd was working(i checked it on other computer), i tried the same with hiren's boot cd but was unable to boot.

the problem has appeared after changing my Cd/DVD from from Sony to LG. i have also checked my optical drive and found it working as it should in xp.

pls how to solve this problem?

thanks in advance.

[Raymond]

Make sure the BIOS is detecting your new Sony DVD drive but not LG. Best is set it to auto detect.
You said that there's 5-6 seconds of black screen, try hitting any keys and see whether it boot from the disc or not.