Vista 64 bit does not recognize my new 6GB of RAM

Hello, so I recently purchased http://www.newegg.com/Product/Product.aspx?Item=N82E16820231223&cm_re=g_skill_6GB-_-20-231-223-_-Product to replace 3GB of RAM in my P6T motherboard with intel i7 920.

Problem is my system only recognizes 4GB in task manager, and CPUZ recognizes 6GB for some reason. CPUZ also says the memory is dual channel, which it's not according to the label that clearly says Triple-Channel.



I also manually set my timings after putting in the RAM to the timings on the label.
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  1. Never mind! Fixed it.
  2. The problem of Windows 7 or Vista 64-bit not seeing all the memory installed has been a recurring theme. Care to say what you did to fix the problem? You might be able to help someone else.
  3. I usually use http://www.memtest.org/ to test memory and its configuration without OS involved into it.
  4. I am having exactly the same problem with the exact same board...

    Care to share what you did to fix it?
  5. With the socket 1366 and 1156 CPU's this problem often occurs as a result of poor pin contact. Sometimes reseating the CPU is enough to fix it. But sometimes there are bent pins that need straightened out. As long as you're re-seating the CPU, you may as well check for bent pins. Check out bilbat's sticky for more instructions. Search for "i3/i5/i7 'Missing' Memory"
    http://www.tomshardware.com/forum/272698-30-gigabyte-guide-read-first

    EDIT: After reviewing the screenshot again, this is probably not the problem that the OP ran into. When this pin-contact issue is the cause of missing memory, the RAM available usually shows up as (for example): 6.00 GB (4.00 GB usable)
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