Every time you turn your system on, it checks the boot sector on your hard disk without your knowledge. Hard disk is a physical location where the system finds the required information to load the Windows for you to use. Sometimes the boot sector gets corrupted or compromised due to a virus infection or any physical degradation, which results into a blank grey or black screen called the Black Screen of Death.
The term Black Screen of Death (BlSOD) is used to describe a specific set of errors encounters by Microsoft Windows users. The characteristic symptoms of Black Screen of Death include workstation getting locked up and the screen completely going black. The user can encounter the problem at any point of time while using Windows, while working in a Windows application or while exiting the Windows. Black screen of Death are largely associated with non compatibility of Windows to other software. This behavior sometimes gets resolved with a simple reboot and you may never have to worry about it again but sometimes it may be something serious that will not go away simply.
Determining the exact cause of Vista Black Screen of Death is a very tedious and time consuming investigation process which requires thorough expertise in assembly language and a software debugger. With a decade of experience, Microsoft certified Tech Support Professionals of Ask PC Experts unravel the mystery effectively and fix the problem for you.