Hi,I have upgrade my OS to Windows 7 from Windows XP Home but I only cane use 3.3 GB memory of 4GB installd.My spec.Windows 7 Home Premium (x64) (build 7600)Install Language: Svenska (Sverige)System Locale: Svenska (Sverige)Board: MSI AMETHYST-M 1.0Bus Clock: 200 megahertzBIOS: Phoenix Technologies, LTD 3.47 03/03/20062,20 gigahertz AMD Athlon 64256 kilobyte primary memory cache2048 kilobyte secondary memory cache64-bit readyNot hyper-threaded3328 Megabytes Usable Installed MemorySlot 'A0' has 1024 MBSlot 'A1' has 1024 MBSlot 'A2' has 1024 MBSlot 'A3' has 1024 MBc: (NTFS on drive 1) 1000,10 GB 952,22 GB freef: (NTFS on drive 0) 293,59 GB 37,88 GB freek: (NTFS on drive 2) 160,04 GB 136,05 GB freeNVIDIA GeForce 9600 GT [Display adapter]Allm

Hi,I have upgrade my OS to Windows 7 from Windows XP Home but I only cane use 3.3 GB memory of 4GB installd.My spec.Windows 7 Home Premium (x64) (build 7600)Install Language: Svenska (Sverige)System Locale: Svenska (Sverige)Board: MSI AMETHYST-M 1.0Bus Clock: 200 megahertzBIOS: Phoenix Technologies, LTD 3.47 03/03/20062,20 gigahertz AMD Athlon 64256 kilobyte primary memory cache2048 kilobyte secondary memory cache64-bit readyNot hyper-threaded3328 Megabytes Usable Installed MemorySlot 'A0' has 1024 MBSlot 'A1' has 1024 MBSlot 'A2' has 1024 MBSlot 'A3' has 1024 MBc: (NTFS on drive 1) 1000,10 GB 952,22 GB freef: (NTFS on drive 0) 293,59 GB 37,88 GB freek: (NTFS on drive 2) 160,04 GB 136,05 GB freeNVIDIA GeForce 9600 GT [Display adapter]Allm

You need to enable the memory remap function in your bios. I think it can be found as memremap or just remap - dig around in your bios and enable it. Windows 7 will then see your 4gigs.Dan -

Hi,I have upgrade my OS to Windows 7 from Windows XP Home but I only cane use 3.3 GB memory of 4GB installd.My spec.Windows 7 Home Premium (x64) (build 7600)Install Language: Svenska (Sverige)System Locale: Svenska (Sverige)Board: MSI AMETHYST-M 1.0Bus Clock: 200 megahertzBIOS: Phoenix Technologies, LTD 3.47 03/03/20062,20 gigahertz AMD Athlon 64256 kilobyte primary memory cache2048 kilobyte secondary memory cache64-bit readyNot hyper-threaded3328 Megabytes Usable Installed MemorySlot 'A0' has 1024 MBSlot 'A1' has 1024 MBSlot 'A2' has 1024 MBSlot 'A3' has 1024 MBc: (NTFS on drive 1) 1000,10 GB 952,22 GB freef: (NTFS on drive 0) 293,59 GB 37,88 GB freek: (NTFS on drive 2) 160,04 GB 136,05 GB freeNVIDIA GeForce 9600 GT [Display adapter]Allm