Look,

You asked for free advice, I am telling you that your onboard video is your issue.

That is why IBM tech support can not help you.

I used to build custom computers for a living, I got out of it because people want to argue with me about what they needed to fix their store bought computers, and not wanting to spend a reasonable amount for a well designed custom computer.

Once again, your system memory speed is not sufficent for graphics intensive games. not to mention that you get the memory and system bus involved.