Safe mode without any reason

[niitstudent]

My computer always starts with a Safe mode without any reaon i.e. also if it is shut down properly.
In addition as my keyboard is having USB port, keyboard is not detected in a safe mode, so i have to wait for the whole 30 seconds at all the time i star my computer ?
So please help me regarding solving this problem !!
How to get rid of this problem of Safe mode screen with out any reason.

[EEVIAC]

When your computer is booted.  Click Start> RUN

type:  msconfig

click OK

On the "general" tab, click on the "normal start up" bubble, click apply, ok, then restart..  It should boot normal now