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After upgrading my RAM memory from 2GB to 6GB (DDR3), i want to install windows 8.1 64bit to exploit full performance of RAM. I had a weird problem. Disc with windows 8.1 wont boot. Windows logo appear and after maybe minute or two it restarts itself.

But if i pull out extra 4GB RAM, boot goes on in normal way.

Does anyone know why is this happening and how can i fix this? Or maybe should I just install 64bit Windows on 2GB and then put extra 4GB after installing?

EDIT:

When I run memtest with both RAMs i have unexpected interrupt halting error, but bios is showing that I have 6GB of total memory, and on 32bit windows its like ~3.75gb full memory it recognize in my computer properties. The old 2gb RAM (1333Mhz) has passed the test normally, but when i pull out old one and leave new one in computer and restart computer, it won't even start test or boot or windows.

My system informations:

enter image description here

When i run memtest with both RAMs i get this screen:

enter image description here

CPU-Z shows me:

enter image description here

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  • Please update your question to include detailed information (make and model) of your system or, if custom-built, its components.
    – Daniel B
    Mar 15, 2015 at 12:48
  • Does memtest86+ (or a similar bootable hardware and/or memory diagnostic) work? You shouldn't be trying to install an OS after a major hardware change without making sure the hardware works first. Mar 15, 2015 at 12:50
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    Have you ran memtest86+ though?
    – Ramhound
    Mar 15, 2015 at 15:09
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    Sounds like your new RAM is simply busted. Mar 15, 2015 at 21:53
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    @Raca Yes, this looks like a bad memory module. The way to test that is to run memtest through each memory configuration in turn. If it consistently breaks with the new module installed and consistently works with the new module not installed, then you need to contact the reseller to arrange for a replacement.
    – user
    Mar 16, 2015 at 18:12

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