I am using Acer aspire E500 desktop. I bought a Kingston ddr2 2gb ram and installed it together with another 1gb ram but my computer doesn't boot up. But when I put in any other ram that is 2gb or less, my comp works. I called Acer helpline and they said the desktop only supports till 2gb of ram only. The desktop uses gigabyte gvm-900 and states that it can support up to 4gb or ram. Can any1 advice me on how to resolve this issue or to increase the capacity? Like updating the bios? If not I have to sell away my ram