|On your keyboard hold down the windows key and press R|
when the window appears type MSCONFIG
From the new window go to the Startup tab at the top
scan through the list and disable things you do not need during startup. Dont worry you can always switch them back on later.
Also, you really cannot make a mistake here, windows will automatically enable whatever it needs so its pretty safe.
Once you've done this press apply ok on all windows and restart when promted,.
There may be more wrong with your machine than startup items.