Not Detecting Extra Memory

[hastyle]

Hey guys, I wanted to upgrade my memory from 2gb to 4 gb, got a pair of 2x1gb corsair xms cmx1024-3200c2, installed it in the mb and the bios only detect 3gb, went into windows 7 x86 and it said

"4gb installed but only 2.89 is usable"

also when i got back into my windows my video card drivers was gone, my aero visual package has been changed to solid colors. tried reinstalling the video card drivers and it said it couldn't find my card, went into windows 7 x64, same problem.

so tried swapping memory config to 2 corsair then 2 ocz, still did the same thing, remove the corsair, and went back into windows and everything was fine, nvidia card is there, so is the panel,, same aero package prior to the install.

anyone know what the problem could be? just incompatible memory or not enough power?

thanks.



System Spec
OS windows 7 Ultimate 32bit & 64bit
CPU athlon 64 3500+ Venice
Motherboard Asus A8R-MVP
Memory 2x1GB OCZ Gold dual-channel DDR @ 200MHZ 3-3-3-8
Graphics Card xfx 8600 gts
PSU Antec Truepower 2.0 380watts (came with case)
Case Antec
Hard Drives 312.57GB Seagate ST3320620AS 244.20GB
Western Digital WDC WD2500KS-00MJB0 488.39GB
Western Digital WDC WD5000AAKS-00TMA0

 

[roonj]

Look in bios for a setting which says "remap extended memory" or similar.
It's very common and natural for less than 4 megs to appear when running a 32bit operating system as it will often be reduced by the amount of physical ram on the video card.
The particular error you have along with reduced available memory is the bios remap of memory, the address used without remap enabled is where video data is stored.

 

[hastyle]

found this in the manual, must be what your referring too??
hardware memory hole
Enable or disable the software memory remapping around the memory hole. only REB EO processors and above support this feature.

Look in bios for a setting which says "remap extended memory" or similar.
It's very common and natural for less than 4 megs to appear when running a 32bit operating system as it will often be reduced by the amount of physical ram on the video card.
The particular error you have along with reduced available memory is the bios remap of memory, the address used without remap enabled is where video data is stored.