Hi, You could boot into safe mode and type MSconfig into start search box to open System Configuration and disable all startup items to check if you could boot normally. For a detailed process, you could refer to the following article: http://support.microsoft.com/kb/929135 meanwhile, if this issue occur recently, try system restore to go back to a previous good time point to see if you could fix this issue.Alex Zhao TechNet Community Support

OS win 7 ultimate 32-bit. On normal startup it is black and previously would black screen but come back after a while, now is just all black with no cursor and can't access task manager. Can access safe mode. Would reinstalling win 7 fix this?

Hi, You could boot into safe mode and type MSconfig into start search box to open System Configuration and disable all startup items to check if you could boot normally. For a detailed process, you could refer to the following article: http://support.microsoft.com/kb/929135 meanwhile, if this issue occur recently, try system restore to go back to a previous good time point to see if you could fix this issue.Alex Zhao TechNet Community Support