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Hardware Forum / Brand Name Systems / Acer / July 2007ACer 9424 RAM issue
Hi people. According tot he specs on the ACER 9420 notebook series the 9424 should be able to deal with 4GB of Ram. So I installed a matched set Kingston. And what happens? The bloody thing only sees 3GB! Anybody have an idea OR done the same without any problem ( in which case I have a hardware issue - still under guarantee). Other question: The mainbord in the 9420 series has a dip-switch on it. ANYBODY have any idea what it is for? ( Acer doesn't seem to). This is a limit of 32-bit OS's in general. They can only 'talk to' 2^32 (i.e. 4GB) memory addresses, but some of those addresses are reserved for hardware. If you want to read more about it check out this link, although it's pretty tech-y: http://blogs.msdn.com/oldnewthing/archive/2004/08/22/218527.aspx > Hi people. > According tot he specs on the ACER 9420 notebook series the 9424 [quoted text clipped - 5 lines] > Other question: The mainbord in the 9420 series has a dip-switch on > it. ANYBODY have any idea what it is for? ( Acer doesn't seem to). Sorry guy, but that is not the problem. The problem is that the POST only sees 3GB. So this is either a BIOS or a mob fault. All I want to know is 'did anybody update any of the 9420 series notebooks to the (specs) max ram of 4GB and had the same problem.'? If so, i can go to acer and request replacement of the faulty mob. >This is a limit of 32-bit OS's in general. They can only 'talk to' 2^32 >(i.e. 4GB) memory addresses, but some of those addresses are reserved for [quoted text clipped - 11 lines] >> Other question: The mainbord in the 9420 series has a dip-switch on >> it. ANYBODY have any idea what it is for? ( Acer doesn't seem to). its the OS.not acer > Sorry guy, but that is not the problem. The problem is that the POST > only sees 3GB. So this is either a BIOS or a mob fault. All I want to [quoted text clipped - 18 lines] >>> Other question: The mainbord in the 9420 series has a dip-switch on >>> it. ANYBODY have any idea what it is for? ( Acer doesn't seem to). >its the OS.not acer I am sorry guy but you are wrong. In order for the OS to use the ram available it has first to be recognized by the mainboard ( i.e. BIOS) as being present. That's what the POST is all about. Making sure that everything is there and can be addressed. >> Sorry guy, but that is not the problem. The problem is that the POST >> only sees 3GB. So this is either a BIOS or a mob fault. All I want to [quoted text clipped - 18 lines] >>>> Other question: The mainbord in the 9420 series has a dip-switch on >>>> it. ANYBODY have any idea what it is for? ( Acer doesn't seem to). You guys and all of your rampant speculation... Let me give you all a clue.. . If you want to see more than 3.25GB's of memory, install a 64 bit OS. ALL 32 bit OS's (Mac OS, Linux Ubuntu and Windows) do this. At the Mac store they don't even offer 4GBs for 32 bit machines. >>its the OS.not acer > [quoted text clipped - 8 lines] >>>>> Other question: The mainbord in the 9420 series has a dip-switch on >>>>> it. ANYBODY have any idea what it is for? ( Acer doesn't seem to). |
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