Re: a message appeared at the bottom of the screen saying that the bios was being updated. Next a new message appeared saying that the machine was being rebooted and not to power down. Next the desktop started up again but the screen remained blank. as usual, Dell recommended and automatic bios update has rendered the PC into a No POST situation.  try recover your BIOS. How do I initiate BIOS Recovery on a Dell desktop or all-in-one computer? PS 
I have had desk top Inspiron 3471 for almost 2 years. I updated the drivers as recommended by the Dell support icon.(exactly as many times before). This time after downloading and installing the drivers a message appeared at the bottom of the screen saying that the bios was being updated. Next a new message appeared saying that the machine was being rebooted and not to power down. Next the desktop started up again but the screen remained blank and that is where I am now. I have tried the usual stuff switching off and back on but still the same blank screen. The on/off button on the tower has a white light- I think it was orange before I started this process so don't know if that gives a clue. Can anybody help?
drivers update problem