You have a computer that is running Windows 7 or Windows Server 2008 R2.
This computer is connected to a high resolution monitor.
On this computer, the default dots per inch (DPI) display setting is set to a value other than 96 DPI.
In this scenario, the computer has an unexpectedly slow startup time after a change is made to the default DPI display setting. The computer has an unexpectedly slow startup time every other time that the computer is started.
If you are experiencing this issue, then there is a hotfix available.