MY MOTHERBOARD DONT RECOGNIZE THE MEMORY, YOU MUST REINICIALIZE 3 TIMES AND THEN BEGIN TO WORKS, I TEST THE MEMORY & WORKS IN OTHER MOTHERBOARDS, I TRY WITH OTHER MEMORIES & DO THE SAME, GIVES A7 ERROR
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If you have encounter this kind of trouble this is a RAM problem which is beeping. B
Beep code pattern on a PhoenixBIOS system means that there has been an
issue while testing the DRAM refresh. This could be a problem with the system memory, an expansion card, or the motherboard.
Random Access Memory (RAM) is the "working memory" in a computer.
Additional RAM allows a computer to work with more information at the
same time which can have a dramatic effect on total system performance.
RAM is typically referred to simply as "memory" even though other types of memory may exist inside a computer.
At this time you need to check the memory. Remove the memory and turn it on identify in there is sound provided.
Memory is installed in the memory module slots located in the motherboard. These slots are easily locatable by looking for the small hinges on
either side that lock the memory in place. Certain sizes of modules may
need to be installed in certain slots so always check with your
motherboard manufacturer before purchase or installation.
Sometimes, if the memory is a newer type, even though it matches the specifications laid out by the motherboard, there may be other factors like timing and voltage which cause a motherboard to not function with that memory. A lot of the time a motherboard manufacturer will be made aware of this problem and release a BIOS update to resolve it. Have you checked the motherboard manufacturer's website, ESC, to see if your particular motherboard is up-to-date with the most currently released BIOS version?
You can figure out what version of BIOS you're running if you go to Start -> All Programs -> Accessories -> System Tools -> System Information. On that first page it will list the BIOS version information and the date of that BIOS. If ESC has a newer BIOS available, you might try updating the BIOS to see if that resolves the issue.
I have read that there are dual memory controllers (duel channel) and that when you use 2GB like that you are using 1 memory controller for each stick. Maybe one of your memory controllers is bad... maybe popped a cap? Sounds like time for a new MB. See this thread...
The BIOS recognizes the same speed chip. Say, "PNY 512mb 333mhz 12ns". If you mix and mismatch, the BIOS won't see it even though your motherboard will take the differant type chips.
They should all be the same.