I bought this memory to upgrade the 1gb i installed when the pc was built. Althought simple to install however i had to spend half an hour fiddling with its position as i repetitively either got the "blue screen of death" or graphic performance was affected. (weird lines and colours ect). Following this i had another major issue and had to remove the memory and install it on another slot, following a couple of teeting errors it appears to work but i am not sure for how long. i advise you to buy kingston or other known brand RAM as you can trust this to work every time as i expereinced with my first RAM module.