After a series of severe BIOS checksum errors and crashes my previous computer died (running windows XP professional, sp 2). I wanted a working computer and I also wanted to salvage the HD and the data on it. So I purchased a new motherboard (Biostar P4M80-M4 with a Pentium 4, 2.8GHz) and tower and switched my old peripherals (DIMMs, Gainward GeForce 3 4x AGP video card, Belkin Hi-speed USB 2.0 and firewire card, soundblaster/audigy 24-bit card and front panel interface, Toshiba DVD/CD player, memorex DVD/CD burner, maxtor 60 GB hard drive, generic floppy) into it. Installation was not a problem, but when I put it all together and switched on, the lights went on and the fans ran but nothing happened -- computer didn't boot. According to the MB manual, this was a "system inoperable" condition and I should check the installation of the DIMMs (which I had accomplished correctly, or so I thought). I reinstalled them, with no luck initially, but on the third or fourth try the computer started! However, Windows wouldn't start, so I did a repair install from my windows disk. The computer then came on in windows and there was my previous installation, data intact! The next step was to install my sound card, which I like to install separately because windows tries to load its own drivers and I want to avoid that. I installed the sound card and hooked up the cables and when I turned the computer on, nada -- lights on but nobody home. It's the system inoperable condition. Repeated re-installation of the DIMM have had no effect. Very annoying.
Please note that the computer isn't booting so I have no video to display helpful error messages. Also, when I was closing up the tower after soundcard installation, I connected power to an extra fan. It ran just fine but the computer didn't work! In subsequent attempts to start the computer I have left this fan disconnected; I have also, in desperation, removed the sound card. But nothing has worked. I'm all out of ideas and hope maybe somebody out there can suggest something. Thanks.
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