If you're running a 32-bit OS, you have to install a 64-bit OS to use all 8GB. If you are using a 64-bit OS, check to make sure them RAM is seated properly.
If you're running a 32-bit OS, you have to install a 64-bit OS to use all 8GB. If you are using a 64-bit OS, check to make sure them RAM is seated properly.