Windows 7 Win7 x64 Mem issues

It seems like you are facing an issue with only 4GB of your 6GB DDR3 memory being reported as usable in your Windows 7 x64 system. This discrepancy can be due to various reasons, including hardware limitations or configuration settings. Here are a few steps you can take to troubleshoot and potentially resolve this issue without having to replace your motherboard: 1. Check BIOS Settings for Memory Remapping: Enabling memory remapping in the BIOS can sometimes address memory recognition issues. However, if you can't find this option in your Gigabyte GA-EX58-UD5 motherboard's BIOS settings, there are alternative solutions. 2. Update BIOS Firmware: Make sure you have the latest BIOS firmware installed on your motherboard. Sometimes, BIOS updates can include fixes for memory recognition issues. 3. Check for Memory Compatibility: Ensure that your memory modules are compatible with your motherboard. Sometimes, mismatched memory modules can cause such issues. 4. Reseat Memory Modules: Try reseating the RAM modules in their slots. Sometimes poor connections can lead to memory recognition problems. 5. Test Memory Modules: To rule out faulty RAM, you can test each memory module individually or use a tool like MemTest86 to check for any memory errors. 6. Operating System Settings: - Check Resource Monitor: Verify the memory usage in the Resource Monitor to see if the full 6GB is being detected. - Maximum Memory in msconfig: Ensure that the "Maximum Memory" option in msconfig is not limited and set to the correct value. 7. Driver Updates: Make sure all your drivers are up to date, especially chipset drivers. If after trying these steps you still face the issue, it might be beneficial to consider upgrading to a newer supported operating system like Windows 10 to fully utilize your hardware capabilities without any compatibility issues.