Windows 7 64 bit not running with more than 3GB of ram.

Today I received my 2 4gb ram modules from Crucial, unfortunately windows is being annoying, as usual, and every time I try and run my computer with the new ram, it crashes. I get sent to the windows error recovery screen and it won't go any further than that. I can put the old memory back in and it works fine. I managed to get the new memory in and working fine when I changed the maximum memory limit on windows to 3gb, but that doesn't get me anywhere, other that ruling out the ram being dodgy. And yes, before you ask, the windows os installed is 64-bit. Any ideas?
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  1. What motherboard is it?, Which ram are you trying to install?
  2. tenaciousk said:
    What motherboard is it?, Which ram are you trying to install?


    Sorry should have said, my laptop is the Samsung RV511 and the new ram is 4GB DDR3 1333 sodimm 1.35v 204 pin (not sure which bits of info you needed)
  3. That is the correct memory, Maybe there is a BIOS setting you need to update.

    Did you unplug and remove the laptop battery before installing new memory?
  4. Corning said:
    That is the correct memory, Maybe there is a BIOS setting you need to update.

    Did you unplug and remove the laptop battery before installing new memory?


    Yes I removed the battery, what do you mean by a BIOS setting?
  5. Once you turn on your computer, press F2 or maybe Del, or maybe F12 or F9 , its different for different mfg. that will get you into the bios, from there look around, normally you don't have to address it in the Bios but you never know. at least here you can see if the Bios recognizes the memory
  6. Corning said:
    Once you turn on your computer, press F2 or maybe Del, or maybe F12 or F9 , its different for different mfg. that will get you into the bios, from there look around, normally you don't have to address it in the Bios but you never know. at least here you can see if the Bios recognizes the memory


    There are no settings I can find within the BIOS regarding the memory. Currently I have my laptop running with the new ram in, problem is that I have to set the maximum memory limit on windows to 3gb, or it won't start. Windows recognises the extra unused 5gb of ram as "hardware reserved memory" and if I try setting the limit any higher or turn it off then when I start my laptop it sends me to the windows error recovery screen.
  7. Okay, does the BIOS recognize the 8gb, If not Flash to the latest BIOS.

    I'm sure you did this, but I'll mention it any how: Try re-seating the RAMs
    Turn on "Memory remap" in the BIOS (it may be called "memory hole remapping") If it’s not available then:
    Lastly Flash the BIOS to the latest BIOS version that may force the memory remap.
  8. Corning said:
    Okay, does the BIOS recognize the 8gb, If not Flash to the latest BIOS.

    I'm sure you did this, but I'll mention it any how: Try re-seating the RAMs
    Turn on "Memory remap" in the BIOS (it may be called "memory hole remapping") If it’s not available then:
    Lastly Flash the BIOS to the latest BIOS version that may force the memory remap.

    Yeah, I've done most, although I can't find the Memory Remap option still, there is definitely no option that has any relation to the memory. I'm about to try the maximum memory limit 1mb over 3gb, because why not?
  9. Ok, so I can get it running at 4gb, but not 5; I haven't tried anyway in between but I don't see much need. So why is the max it will run at 4gb and not 8gb that the OS and motherboard are capable of?
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