комп не видит всю память

[nazarol-jk]

для старого солдата это титанический труд---чё-то тут прямо" Война и мир"
Motherboard----ASUS P5B
I/O 1X2 port USB 2.0 module
cpu LGA775 socket for intel Core tm2 Exstreme/Core tm 2 Duo/
Chipset Northbridge intel p965 with intel Fast Memory Access Southbridge intel ich8
System bus ---1066/800/533 MHz
Memory Dual-channel memory architecture
4 x 240 pin DIMM sockets support unbuffered
non-ECC DDR2 800/667/533 MHz memory modules
Supports up to 8 GB system memory
BIOS features 8mb flash ROM.AMI BIOS.PnP.DMI 2.0.WFM2.0
SM BIOS 2.3. ACPI2.0a.ASUS EZ Flash 2.ASUS CrashFree BIOS 3

насчёт памяти написано:
if you install four 1 or 2gb memory modules/ the system may only recognize less than 3gb because the address space is reserved for other critical functions.This limitation appears on Windows xp32-bit operation system which does not support Physical Address Extension [PAE]
if you install Windows xp32-bit operation system. a total memory of less than 3gb is recommended/
This Motherboard does not support memory modules made up of 128 mb chips or double sided x16 memory modules
Notes on memory limitations
Due to chipset limitation. this motherboard can only support up to 8gb on the operating systems listed below.You may install a maximum of 2gb DIMMs on each slot . but only DDR2-533 and DDR2-667 2GB density modules are available for this configuration Some old-version DDR2-800/667 DIMMs may not match intel
On-Die-Termination [ODT]requirement and will automatically downgrafe to run at DDR2-553 if this happens contact your memoty vedor to check the ODT value
Due to chipset limitation.DDR2-800 with CL-4 will be downgrade to run at DDR2-667 by default setting. If you want to operate with lower latency. adjust the memory timing manualy
Due to chipset limitation.DDR2-667 with