ATI AMD Radeon HD 6300M Series (HP) not detected in dxdiag  

Yes 1 GB is correct ....

Notebook computers with a switchable graphics feature have two graphics processing units (GPUs) - a power-saving, integrated GPU and a high-performance, discrete GPU. Computers with an Intel power-saving GPU and an ATI high-performance GPU combine the low power advantages of an integrated GPU with the maximum performance of a discrete GPU. Use this document to understand the difference between Dynamic and Fixed Mode switchable graphics and to learn how to use and configure switchable graphics on computers with dual Intel and ATI GPUs.

Contact HP Support and Customer Service | HP® Support

dinilk said:

Hay
What does that switchable mean and it also Shows 1gb ddr3 . I could not understand that can you please explain n
Thank you

I have almost the same model as you.
Switchable graphics are for power saving (Intel HD) only using your processor, or for gaming using the the power hungry ATI Graphics(I recommend being plugged in when gaming).
You can switch graphic cards depending if you are running on battery, or at a desk plugged in to wall power.

I just fixed mine in the past few days an it can be a real troublesome effort.
There is a correct order to uninstall and reinstall you software.
Please, did you delete your recovery partition that has your W7 in it?

PK