Any help with my problem would be gratefully accepted.
I have a Compaq Presario 5116EA with Intel Celeron X86 Family 6 Model 8 Processor 797 MHz. I have upgraded to Windows XP Pro Version 2002 Service Pack 2 and added 256 mb of memory, increasing it to 512mb by adding a PC133 CL2, Non ECC, Non-parity, unbuffered stick to the original crucial PC133u 133 MHz stick. This was checked by crucial software to ensure correct memory added . Since then my PC freezes very regularly. The Event Viewer in the 'system' folder with the source 'acpi' shows the folowing error for each 'freeze':
AMLI: ACPI BIOS is attempting to read from an illegal IO port address (0x75), which lies in the 0x74 - 0x76 protected address range. This could lead to system instability
It locks up much less often when I try just the 1 stick of 256 mb ( be it with the original or just the new one)
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Since Windows NT 4, Windows has become very picky about memory. The memory has to be of very good quality and the DIMMS must match. The other thing you might try is putting the newest memory chip in the DIMM0 slot and put the older one in DIMM1.
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