PCChips P23G(v1.0) MB wont recognize 2G RAM DDR2 1Gx2 kit in BIOS or XP but yet CPUID does
Latest MB BIOS loaded - other BIOS settings to check?
2x512MB sticks are fine = 1G
2x1GB sticks = 1G in BIOS and Windows XP SP3
Both cases, ValueSelect 533MHZ DDR2 using DDR2 MEM slots
I had similar problem with CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory
If this is your RAM:
Corsair 1024MB Value Select PC2-4200 (533MHz) DDR2 RAM, 128Mx64non-ECC, 240-pin DIMM, Unbuffered, CL4, Lifetime warranty (VS1GB533D2)
Then it is high density. You need low density to work, look for one ending with an 8, not 64.
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The original 2 sticks of 256 Mb of RAM gives you a total of 512
Mb of RAM. Two 512 Mb of RAM gives you a total of 1 Gb of RAM.
With two sticks of 512 Mb of RAM are you sure you got a total of 192 Mb of RAM, this is a lot less than the original RAM total of 512 Mb?
Should this be 1920 Mb of RAM?
If this 192 Mb is correct then the RAM modules are either not compatible with the laptop or if the RAM modules are not from the same manufacturer then they may not work together.
Most laptops have video cards that use part of the main RAM for video RAM, that is why the available RAM is less than the installed RAM modules. The amount of RAM the video card grabs depends upon the type of video card and in some cases the amount of video RAM can controlled in the BIOS setting.
Download a small utility called CPUID from http://www.cpuid.com or use this direct download link "http://www.cpuid.com/download/hwmonitorpro/HWMonitorPro_106.zip". Using this utility you can analyze your system hardware statistics and also you can find the RAM capacity supported in your system along with various other RAM parameters. It will also show you the available free RAM slots to use, as well. I hope this is useful to you.
The PC Chips P23G versions 1.0A & 3.0 will not support any current generation Core2Duo, Core2Quad or Pentium Dual-Core processors. Only some of the first generation (Conroe Core) Core2Duo processors which run @ 1066mhz bus and some Pentium D (presler core) processors which run @ 800mhz bus.are supported. Not even most current BIOS will add support for any current processors. Check the pcchips website for CPU compatibility for the P23G..
Your system comes stock with one stick of DDR2 (512 MB), which means that it is _ not_ dual channel DDR2 memory as dual channel DDR2 must be installed in matched pairs. Try to exchange the new memory for 2G of some single channel DDR2.