I also own a Xolo Q1000 and got similar hideous experience of having black screen few days ago. After googling for two days to many forums downloaded lot of things and did the experiments as was advised. Flashed the stock rom which I have downloaded from two sources for several times. But nothing helped to me revive my device. Just feeling helpless.
Luckily the very next day found a forum with a tutorial " How to flash stock rom in Xolo Q1000". Thought that I have tried so many things why not one more time. So downloaded the stock rom again from their source and flash the stock rom with sp flash tool. This time the phone booted and saw the XOLO logo and finally saw the home screen. Was feeling very happy.
What I understand after doing so many things that the available stock rom for Xolo Q1000 might has some issue which is causing the black screen. Because I have used stock rom of four different sources and got same experience from three of them. You may think I have counted four wrongly, it should be three instead. No mate, the below link has two stock rom link.. One is old stock rom and updated stock rom. I suggest do not use the update stock rom. It has gave me same black screen.
You may give a shot and hope it would revive your device. If you succeed please share it because it will help others.
needrom.com/mobile/xolo-q1000/ use www because I can submit link after 10 post.