dell optiplex 760 8gb memory install windows XP shows 3.1
- Thread starter Theoauto
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JimF_35
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Which version of Windows?
If it is a 32 bit version then you are seeing the upper limit of memory for a 32bit OS. The other thing it could be is hardware reservation being done by your BIOS. This is something that Windows 7 and Motherboard BIOS have done.
https://social.technet.microsoft.com/Forums/windows/en-US/9946daa7-6cc7-4c67-b4db-d9bc03c63ea6/windows-7-hardware-reserved-memory-way-too-much
If it is a 32 bit version then you are seeing the upper limit of memory for a 32bit OS. The other thing it could be is hardware reservation being done by your BIOS. This is something that Windows 7 and Motherboard BIOS have done.
https://social.technet.microsoft.com/Forums/windows/en-US/9946daa7-6cc7-4c67-b4db-d9bc03c63ea6/windows-7-hardware-reserved-memory-way-too-much
JimF_35
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There is your problem. That is a 32bit version of Windows which can not handle more than 3.5 GB of RAM. You will need to upgrade to a 64bit version of Windows to use memory past 3.5 GB.
http://en.wikipedia.org/wiki/3_GB_barrier
http://en.wikipedia.org/wiki/3_GB_barrier
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