I have a Gateway G6-333 Celeron, with 192 meg of Ram, DVD, CD-Burner, 56k modem, 10/100 3com Networkcard. I tried to install an ISA SCSI card, but it failed to boot. After removing all the cards I got the system back. I purchased a PCI SCSI card, put it in, and boom---NO BOOT! After removing everything, I finally got it back. I shut down to put the side back on the case, and have never got it back. Checked all the cables, checked the power supply. The board is the only thing left. The power light on the front glows yellow...could that be telling me something? The fan comes on, and the hard drive spins. No more ideas.