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Thi sis not a problem ..but it is a common issue ..If it says it has 4 G and 3 of them usable ..it means this is either the supported or the maximum needed for your system ..In case you install something it will use the rest for it if needed.Usually there can be another thing too ..If you have an on-board video card ..check the settings in bios cause it may be transferred for the video function ..(the rest of the memory , this is happening when you default the bios ..and it has enough memory to get it from .) Anyway ..like I said ..even if it is the max allowed ..it may not be the maximum supported..many boards does not supports the maximum on slots ..Older versions even made boot issues on the max ram was installed . try to take a look in bios settings (advanced settings ) ..and under the on board vga ..see the amount of ram memory allocated , and if you want that memory ..change it ..If you only wanted to know why ..and you are satisfied with 3 G ..and the rest to function for the video card ..just let it be .. I also suggest to reinstall the operation system if you upgraded memory ..it will assure the best functionality ..
does the post give a audio code before the boot stops..?
the plcc chip can be purchased from the manufacturer if they are still available.
Does the post stop after the mem test or during..?
if during, try replacing or refitting the ram sticks. You could even remove the ram sticks and see if the post continues or if you receive a beep code.if you get a beep code, go to manufacturers website for beep code info.
Have you tried to reset the bios. most boards can recover from a bios failure, the boards manual will tell you how to do this if the board supports it.
If the plcc has failed, replacing the board may be cheaper and free of hassles. Replacing the plcc is a pain as you must get the correct bios installed.
Are you getting the video bios details on the screen ?
if no, try another video card. If you are using an on board video chip, try a video expansion card, either AGP or PCIE type, whichever the board supports.
If the board only has PCI or AGP, replace the board as it will not have the features for modern software and you will probably not be able to replace the plcc.
Hope this helps ... from the Ami BIOS website ....
8.2 POST BIOS Beep Codes Number of Beeps Description 1 Memory refresh timer error. 3 Base memory read/write test error 6 Keyboard controller BAT command failed 7 General exception error (processor exception interrupt error) 8 Display memory error (system video adapter) 8.2.1 Troubleshooting POST BIOS Beep Codes
Number of Beeps Troubleshooting Action 1, 3 Reseat the memory, or replace with known good modules.
6, 7 Fatal error indicating a serious problem with the system. Consult your system manufacturer. Before declaring the motherboard beyond all hope, eliminate the possibility of interference by a malfunctioning add-in card. Remove all expansion cards except the video adapter. • If beep codes are generated when all other expansion cards are absent, consult your system manufacturer’s technical support. • If beep codes are not generated when all other expansion cards are absent, one of the add-in cards is causing the malfunction. Insert the cards back into the system one at a time until the problem happens again. This will reveal the malfunctioning card.
8 If the system video adapter is an add-in card, replace or reseat the video adapter. If the video adapter is an integrated part of the system board, the board may be faulty. Copyright 2008
Hi Keith, the Intel D845GVAD2 board uses an integrated graphics card for video & also uses your system memory to function. Suggest, you remove the system memory & clean the contacts with alcohol. (Allow time for the alcohol to dry). Blow the memory slots out with canned air to remove any dust build up. Reseat your memory & boot the system. (No display)? From your description it sounds like the integrated graphics controller may be bad. The only way to test this would be to add a PCI video card to the system. The board’s bios uses auto detect. If you add a PCI graphics card to the system the bios should auto detect the PCI video card & load display. There is a chance that the controller is too damaged & the bios will not see the PCI graphics add in card. In this case the board would be considered bad. If you have a local computer shop or know of someone who may (have a known to be good) PCI video card, you can ask to borrow it & test your system for video display. Here is a link to an inexpensive PCI card: http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2174312&CatId=695
Get an old, inexpensive working graphics card from an obsolete PC and test your board with that (a pci one). If the problem persists it's almost sure it's a motherboard problem you will solve only with replacement. Try also removing BIOS battery to restore BIOS default settings. Unplug your system, locate the botton-shaped battery on your motherboard, remove it, wait atleast 15 seconds, put battery back in place and plug in your system's power.
There are a few things that can cause no display on the monitor. That single beep means POST = Power On Self Test. Post has tested everything on you're board to be good. The cable between video card & monitor may be bad or not connected correctly (Swap out the cable as last resort). 2. You're monitor is defective, try swapping it with known working monitor. 3. You're video card is not functioning. Lastly, when you reset the system cmos/bios everything went back to default. This means you're bios is now using the onboard PCI video graphics. Remove you're radeon 9600 video card. Try booting the system. You should see display again. The only way to test you're radeon would be to boot to the bios & set bios to boot using the AGP radeon. You need to change Init Display First to AGP & not PCI. If you loose video than you know you're AGP card is bad. Reset the cmos/bios before adding another AGP card or you will not get display. This setting is on pg 3-5. Integrated Peripherals. If you need you're manual you can download it from this link: http://www.abit.com.tw/page/en/motherboard/motherboard_detail.php?pMODEL_NAME=NF7-S2G&fMTYPE=Socket+A