Running Windows 7 Home Premium, 64-bit. Had 8Gb RAM, noticed that 4Gb were hardware reserved. Bought 16Gb of RAM and installed it (new chips, 4x4Gb). Now I see 16Gb recognized and 8Gb hardware reserved. Looked under MSConfig -> Boot -> Advanced -> Maximum memory is not checked. What is happening? Why does the system always reserve half the RAM for the hardware?
More about :win7 bit 16gb ram half hardware reserved
Sorry - I do not quite understand the answer. Maybe I don't know enough about hardware. Let's take it a bit slower.
Here's what my BIOS shows:
BIOS Info: A15 (02/04/2010)
System: Dell Studio XPS 435T/9000
Processor type: Intel i7 CPU 920 @ 2.67GHz
CPU Speed: 2.67GHz (133x20)
Processor L1 Cache: 256 KB
Processor L2 Cache: 1024 KB
Processor L3 Cache: 8192 KB
Memory Installed: 8192 MB <----- Should be 16 GB!
Memory Available: 8192 MB
Memory Speed: 1066 MHz (133x8)
Memory Technology: DDR3 SDRAM
In the Windows Resource Monitor -> Memory -> Physical Memory I see:
Hardware reserved: 8202 MB, Available: 3497 MB, Cached: 2281 MB, Total: 8182 MB, Installed: 16384 MB
How is it possible that Windows sees more installed memory than the BIOS does?
In MSConfig, I tried to check the box and specify "Max mem: 16384 MB". I restarted the PC, but the result is the same.
In the BIOS, there is no option to "disable the Intel on-board graphics". My graphics card is an Nvidia GE Force GT 620.
Can you be more specific about what I should try to change and where?
Solved the problem. The BIOS only showed 8 Gb. The motherboard had 6 slots. I had installed 4x4Gb into four of these slots. I moved two DIMMs from the leftmost two slots to the rightmost two slots, and now the BIOS sees 16 Gb. All 16 Gb are available in Windows as well.