1. You Have: GeForce GT 130M
That's not very high up for a GPU. You may have to reduce effects to lowest settings.
2. HOWEVER I too have an all too similar HP d4999t. I missed where you revealed the make and model but last week it became sluggish and a friend clued me to some firmware change for the hard disk drive. Now it's back to it's full speed. I haven't seen that one before.
Another note about this genre machine is that the speed is sluggish unless we install Intel's Matrix Storage Manager. And I apologize if Intel renames that again and again but you can figure that new name out.
In closing, sorry but I couldn't find the make and model.
I have several games that for some reason the sound gets choppy and at the same time the action does also.
Sys Req lab gives this result for my latest try..The ball demo
Recommended: Dual core or better
You Have: Intel(R) Core(TM)2 Quad CPU Q9000 @ 2.00GHz
Recommended: 2 GB
You Have: 8.0 GB
Recommended: Windows XP SP2, Vista, or Windows 7
You Have: Microsoft Windows 7 Home Premium Edition (build 7600), 64-bit
Recommended: SM3 Compatible video card NVIDIA GeForce 8800 or better
You Have: GeForce GT 130M
Features: Recommended attributes of your Video Card
Required You Have
Video RAM 256 MB 4.0 GB
Hardware T&L Yes Yes
Pixel Shader version 3.0 4.0
Vertex Shader version 3.0 4.0
You Have: NVIDIA High Definition Audio
Free Disk Space
Recommended: 1.5 GB
You Have: 208.3 GB
It seems i should be able to run it ,but it is so bad it becomes unplayable.