Please be noted that start up is nothing but the programs that load automatically when windows running to start up and makes the PC is slow during start.
Most of us do not want many of the programs to load during the start.
Actually two ways to clear speed up computer startup:
First, from Start Menu -> click on All programs -> click on startup
Second, from Start Menu click on Run and write msconfig and then press Enter.
A Dialog box System Configuration Utility opens.
Click on Startup tab, Now click on Disable all or select your choice for your convenience then Press Ok
A new dialog box opens, to let effect take place Click on Restart
After restarting, you will see that the start up of your computer is better than before.
Goodluck and try it.
rgds,