Why Does Only 1/2 of Installed RAM show?

m3incorp

m3incorp

New Member
Up until a couple of weeks ago, my RAM was showing up as 1512 Megabytes Installed Memory.

Slot 'A0' has 1GB
Slot 'A1' has 512MB

Now Belrac Advisor and windows shows:


736 Megabytes Installed Memory

Slot 'A0' has 512 MB
Slot 'A1' has 256 MB

I have removed all RAM modules and reinstalled one at a time. I have used brand new ones, the original ones, and RAM modules from my other computer. I have tried 1GB, 512MB, and 256MB sticks of quality RAM. They all show exactly 1/2 of what they should be showing.

The computer is my sons Compaq Presario 6420NX.

Does anyone have any suggestions?
 
Does the computer have integrated graphics? If it does, it is using some of the memory, but I don't think it would use that much.
 
mrbagrat said:
Does the computer have integrated graphics? If it does, it is using some of the memory, but I don't think it would use that much.
Click to expand...
thats different, that takes part of the total system memory, usually up to 128MB.

His problem is that whatever ram size he puts in there, it shows up as half.

When you put just one stick in, does that show up as half too? Try resetting the CMOS Jumper and see if that makes any difference.
 
What might be going on is that what I read about the 6420nx is that it will only read 1gb of ram, if you go over 1gb it will read the memory wrong, think it has two slots, might just be able to read 2X512 and not even one 1gb stick
 
Product Name 6420nx US Product # DA236A Chassis (Color) Minitower – Silver/Black Color detail Black/Gray Microprocessor AMD Athlon XP2200+ 1.8 GHz Frontside Bus Speed 200/266 MHz Processor Architecture PGA462 Socket A Chipset Via KM266 Hard Drive 80 GB Ultra DMA Drive RPM 5400 RPM Memory 256 MB DDR SDRAM Memory Max 1 GB Memory Speed 2100 MB/Sec Total DIMM Sockets 2-184 pin Available DIMM Sockets 0-184 pin open Primary Cache (L1) 128 KB Second-Level Cache (L2) 256 KB Multimedia Drive 16X maximum speed DVD-ROM CD, DVD Rewritable Drive CD-RW (40X/10X/40X) Diskette Drive 3.5” (1.44 MB) Fax/Data Modem Lucent V.92 56K modem Network Integrated 10/100 Base-T Keyboard Compaq Internet Keyboard (PS/2) Mouse Internet Scroll Mouse (PS/2) Sound Integrated Realtek ALC201 (AC97) Speakers N/A Speaker Form Factor N/A Total Expansion Slots (3) PCI (1) AGP 4X 1.5v Available Slots (2) PCI (1) AGP 4X 1.5v Total Drive Bays Ext. (1) 3.5” (2) 5.25” Int. (2) 3.5” Available Drive Bays (1) 3.5” Int. Total External Ports (1) Serial (6) USB 2.0 (1) Parallel (2) PS/2 Available External Ports (1) Serial (6) USB 2.0 (1) Parallel Front Mounted Ports (2) USB 2.0 Video Graphics (AGP) Integrated ProSavage AGP (Via KM266 Chipset) Graphics Memory 32 MB of DVM Tower Dimensions 22.25 x 11.25 x 19.875 inches Power Supply 200 Watts


Max 1 GB Memory Speed 2100 MB/Sec Total DIMM Sockets 2-184 pin
 
I was thinking the same thing. I thought I had tried it without the 1GB installed. I will play with it this weekend to see what I come up with.
 
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