Question about Acer Aspire T690 (AST690UP820A) PC Desktop

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Aspire T690 memory upgrade trouble

I have a Acer aspire T690 , intel 946 GZ chip set , 32 bit / vista pre / P-D 3 GHZ / im trying to replace the memory with two new 1 GB DDR2 chips , the memory is new out of package / it is 667 CL5 PC2-5300U 555-12 .

PC will not boot , no beeps no nothing , is there a change in the BIOS that needs to be made ? Jumper on mother board need to be moved ? there is no bios update at this time , im lost ? I dont want to beleave this new memory is junk but ....????

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  • Bill Cruze Dec 08, 2007

    PC2-5300 , acer says they are the right speed however they are untested with this PC , they say , we can not tell you if they will work or not , just that they are untested , the 512's that came with the acer t690 are PC2-5300'S , the new ones are PC2-5300 also , the spec's are the same , thats one of the first things i checked is that i was trying to use the right memory , i have spent over 40 hours reading about memory , how to install it and all that jazz, 'I NEED TO KNOW THIS " do i set up the new ram in my BIOS or do i change a jumper setting on mother board ?

  • Bill Cruze Dec 08, 2007

    here is a link to the website i got the new memory from , the page shows the ram i have now that wont work ....... http://www.kahlon.com/itemdetailpg.asp?i...



    Out of all the reading i have done i can only wonder about jumpers on the mother board or setting up the system bios to make this upgrade work , i can't find anything , anywhere that says how to do this , im starting to think that the memory is junk , after all its not high end gamming memory ! it's the cheep'est memory i could find , im poor , i spoke to the people at Kahlon and they said it sounds like a seating problum , (no beeps) , i tryed all the simple stuff like cleaning them and making shure there all the way in the slots and all that jazz , im at a loss for words here , this is not my first time around a bios or upgrading memory , im 40 years old , i have been gamming on line for over 12 years , how ever this is only my second pc , im comming off a viao , windows 98 , 333mhz , lol , yeah i been around a bit .


  • gary_4fun Dec 19, 2008

    Yeah, I have the same T690 and when I put one or two Crucial 1G 5600 memory sticks in, the system boots and runs 5 to 10 minutes and then shuts down with a blue screen that is so short one can not read it.

    gary_4fun@hotmail.com

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Check the Acer web site and make sure U are putting in the correct type of DDR2 ram. Even though they are called DDR2, there are different types, i.e. 5300, 5600, etc.

Posted on Dec 08, 2007

  • Rory Biggs
    Rory Biggs Dec 09, 2007

    Go on line to the pc manufacture and find the manual to that model number. it will tell you if there is an applicable jumper. The legacy pc's used to have a jumper to address memory... but probaby not yours. I assume U checked the bios to see if its there. If not, and you've reinserted the card, notify who U bought it from and they will exchange... cost postage!

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