I realize this subject is over 3 years old, but I can't help but notice in the System window the user has 8GB of RAM, but is using a 32-bit operating system. 32-bit will not recognize more than 4GB of RAM, or in this user's case, 3.4GB (the other 0.6 is used by the IGP). Upgrade to a 64-bit operating system to release all 8GB of RAM, if you still have that laptop.
I realize this subject is over 3 years old, but I can't help but notice in the System window the user has 8GB of RAM, but is using a 32-bit operating system. 32-bit will not recognize more than 4GB of RAM, or in this user's case, 3.4GB (the other 0.6 is used by the IGP). Upgrade to a 64-bit operating system to release all 8GB of RAM, if you still have that laptop.