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512MB+ hardware reserved - why?

post #1 of 5
Thread Starter 

I had absolutely no idea which subform to make this thread in so it's in General for now. tongue.gif

 

I have an old Pentium D PC with an Intel D945GTP motherboard (945G chipset) and according to the Intel specifications, its max memory is 4 GB of DDR2. I upgraded it from 3 to 4GB, without changing any other settings, and it suddenly shows ~512MB as hardware reserved, with 3.5GB usable. The mobo's onboard graphics are disabled since it has a PCI-E video card installed. Running 64-bit Windows 7. Any ideas what this could be?

 

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post #2 of 5
Thread Starter 

bump redface.gif

post #3 of 5
Hardware devices can
reserve large blocks of phsical
addres space... To see if a
piece of harwarde is
reserving a large chunk of
physical address space, launch "devmgmt.msc",
select Resources by
Connection in the View
Menu, and expand the
Memory node. how did u upgrade yo ram? is it 2gb + 1gb +1gb or 2x2gb? it might also be a bad memory configuration i.e. incompartible modules/ slot mismatch (cant find a better way to explain that) try reseating yo ram differently on yo mobo
The Bad
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The Bad
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RAMRAMHard DriveOptical Drive
A-DATA Semiconductor A-DATA Semiconductor Seagate 2TB Raid0 LG 22x DVDRAM 
CoolingOSMonitorKeyboard
Akasa Venom Windows 7 Ultimate ACER 20"W LCD Deluxe Wireless Multimedia  
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post #4 of 5
Thread Starter 

 

Quote:
Originally Posted by (h@r?!EURfr3$h(TM)(R) View Post

Hardware devices can
reserve large blocks of phsical
addres space... To see if a
piece of harwarde is
reserving a large chunk of
physical address space, launch "devmgmt.msc",
select Resources by
Connection in the View
Menu, and expand the
Memory node. how did u upgrade yo ram? is it 2gb + 1gb +1gb or 2x2gb? it might also be a bad memory configuration i.e. incompartible modules/ slot mismatch (cant find a better way to explain that) try reseating yo ram differently on yo mobo

 

Hey thanks for the reply, I'll definitely go try this out. The configuration is 4x1GB DDR2 533 which should be compatible, maybe one of the modules is defective.

post #5 of 5
Is there something called memory remapping in the BIOS? Enable it if there is. Or see if you can select auto or manual or select another multi for the memory. I am not familiar with your mobo and by no means a memory guru, so that's about all I can come up with. redface.gif
Or you could try switching the memory sticks around.
Oxygène
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Oxygène
(16 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 5 1600 MSI B350 Tomahawk Arctic VTX3D R9 390 8GB G.Skill Ripjaws  
Hard DriveHard DriveHard DriveHard Drive
Kingston Hyper X Kingston HyperX Fury ADATA SP550 ADATA SX8000 
CoolingOSMonitorKeyboard
Noctua NH-D15 SE-AM4 Windows 10 Dell U2711 Gamdias Hermes E1 
PowerCaseMouseMouse Pad
Chieftec A-135 Series 1000W NZXT. Phantom 410 Gamdias Demeter E2 Gamdias NYX E1 
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