Hello,

I have just upgraded my old 486 DX-33 to an MMX-200Mhz. The new CPU is mounted to a VA-503+ Motherboard from 1st Mainboard. My problem now is that I cannot recognize my CD-ROM as either Primary slave or Secondary Master. System hangs once the screen shows BIOS manufacturer and version (award). If I remove the CD-ROM, system will boot. I suspected Sound card at first, but system boots with all cards in place! I changed CD unit with a known good one...same problem!  Could the problem be with the motherboard? Is there a jumper setting to enable the secondary IDE? Board shipped jumpered to the ATX format and I changed power and CPU voltage to the appropriate jumper settings. Maybe problem is with the power supply? Any suggestions? Thanks everyone! Best regards,
Jim Phillips

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