@nadroj
I wasn't able to find any PCI devices/ports to disable at the BIOS.
OK, so I finally got it working... somehow. Well basically these are what I found out:
- RHEL4 server edition and CENTos4 shows the error shown above
BUT RHEL Desktop was able to startup after the boot menu.
- RHEL5 shows some sort of the same error but starts up properly.
- About WinXP going blackout after detecting hardware devices screen; I found a discussion on the web that xp has some sort of problem going to the partition manager when a current grub or linux installation is existing, so I used another utility to format the whole HD first and then install winOS, and then linux afterwards.