Hi, I am having a HTC Desire HD, I had done system update two days back and since yesterday, I am getting a blank screen. dint install any software.. suddenly it went blank after taking a call. The phone is working, meaning others can call and I can take calls but the screen is blank.... I removed the battery and start again, no luck. I am not able to connect it to my PC or HTC sync.. the usual option of Hard reset using Volume and power button is of no use as I cannot see anything in my screen.... any suggestion of how to factory reset with blank screen?? Many Thanks Aswath.