4400 machine in loop

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4400 machine in loop

hi, i have a 4400, 4 x 450mhz, 2gb ram, but it is in loop. When power on, it check base maemory 64mb OK, then, Checking ECC, and starts loop.check base maemory 64mb OK, then, Checking ECC, and on , and on..... i changed the memorys, the processors, and the same thing happens. Any idea? Thanks Andre