HP 6640C memory upgrading 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: "[bold]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[/bold]" 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 clues what to do here?
it could be 1 stick has gone bad or psu thats my guess but dont take my advice to far wait a day or 2 for others to repley
I went into the BIOS and there is a "Power" tab, but there is nothing in there about ACPI specifications. There is an "advanced options", but it merely has a list of IRQs so I don't think that is it either.
Try and mix and match your sticks with just two. It could be that your new stick isn't compatible with the old ones. SDRAM can do that sometimes. If the system works with both old but not one old & one new, then try just using the new one (1 stick). if it boots, buy more of the new type and bin the old stuff, if it doesn't take the new ram back, it could be faulty.
Well, I've tried all different combinations between the three 128MB chips and they all seem to work as long as its only 256MB (not 384MB). I did notice in the BIOS that it is recognizing all three 128MB chips when they are installed. Also, it will initially boot into the Windows2000 start-up screen before it dumps out to the blue screen. It only stays on this bootup screen for about 2 secs, but none the less, it gets there. Could it be something in the way the OS was installed. Would reinstalling Win2000 maybe helps solve the problem?
I think you may possibly have a faulty RAM slot in that case. Have you tried all the combinations in all the slots?
Well, I'll try that, but I'm not so sure that is the problem because as I said in my previous post, it seems to be recognizing all three slots with the 128MB chips in the BIOS. Its worth a shot though I suppose....
Recognition in the BIOS is seprate from working though, that's what a lot of people don't realise. BIOS detection isn't the be all and end all.
Well,I tried installing two 128MB chips in different locations. Slots 1 & 2, 1 & 3 and 2 & 3. And all three chips worked in these slots. I went ahead and tried reinstalling the OS (Win2K), but that even acted kind of squirreling and hung up several times during installation.It originally came with Win98SE so maybe I have to go back to that. We'll see.
