What kind of problem are you having with your notebooks vga? If you don't say, it's pretty difficult for us to help. Or did you really mean you're having trouble finding a vga driver for your notebook?
It doesn't appear that your laptop maker has very good support as I found no drivers posted for downloading on their web site:
And since you gave no physical description of the vga controller, it's impossible for me to help you.... unless you can provide some additional details. Is your vga controller Intel? If so, what is the chip number? I'm not even real sure about what your describing with "qcom qbtm400". I'm guessing it's a laptop model number.... am I right?
Or you can can contact Qcom directly by using the info posted at the bottom of the page of the link above.
And what a unique member name you chose.... ie: "qcom qbtm400" It looks to be a match for your hardware too. Is that what your friends call you?