I have a HP Pavilion 6640C with Windows 2000 installed that I am trying to upgrade from 256MB to its maximum of 384MB. It has 3 memory banks and each one is intended to hold 128MB. Therefore, 384MB is the max. However, it isn't allowing me to add anymore for some reason. It had two 128MB chips installed and I added a third 128MB chip. It starts to load Win2000, but then craps out. I get a blue screen during the booting process that gives me an error that reads the following:
"The ACPI BIOS is not fully compliant with the ACPI specifications. Please contact your system vendor for an update BIOS. If you are unable to obtain an updated BIOS or or the latest BIOS supplied by your vendor is not ACPI compliant, you can turn off ACPI mode during text mode setup. To do this, simply press the F7 key when you are prompted to install storage drivers. The system not notify you that the F7 key was pressed - it will silently disable ACPI and allow you to continue your installation"
I have contacted HP and they informed me that there is no BIOS update available for this unit. The memory type is SDRAM and all the chips are PC100 speeds. What exactly is ACPI and does anybody know what the above message is referring to? Its saying to hit the "F7 key when you are prompted to install storage drivers", but I already have a OS installed. I have also tried switching the memory chips around so they are in different banks, but no luck. Could it be a setting that needs to be changed within Win2000? Any other clues what to do here?