Your systoms suggest a power supply that doesn't work. ATX type p/s units provide alot of voltages and any one will bring it down. Its the least or taken for granted componet of a system. That 3rd HD, may have been the last straw even if it did it before, starting-up a system makes alot of demands and a generic or under-rated p/s can be "stressed" and thus break, sooner or later. Even, if you get a new mtrbd. you *maybe* looking for a new p/s as well or find out, its good insurance to have a higher rated wattage unit plus make it a namebrand one, like Enermax or Antec. Its not uncommon to see 400W+ units and 500W+ are offered as well.
good luck -----Willy
well it seems I manage to kill a computer once a year-- all I did was re-hook up a third hard drive . . . It booted up after the change, then I saw a brief blue screen of death (something about a memory dump) and poof. note, the drive hooked up was a pre-existing one that has worked fine for a year, I had taken it out only briefly to test another newer drive that was also working fine. neither was the c drive. long story short, it's not the drive causing this.
It seems to be the mobo -- no beeps, no POST, no video, the harddrive light comes on and stays on. swapping memory= no help. I don't have another AMD chip to swap in here.
So this WAS an MSI board with an AMD 1800 chip. I have pc-133 memory and i really don't need any more system speed than this one. I would like to get a new mobo that takes the existing pc133 memory and other PCI/AGP cards. either intel or AMD would be fine. any suggestions before I delve into microcenter, circuit city, and tiger direct? thanks! - fj