I agree with Naz; you state that the following are ticked and then don't tell us which ones they are.
If you're talking about the startup section reached through 'msconfig', then no, you probably don't need them all.
Anything which looks like a Windows service or your antivirus software, leave them ticked.
Things like 'quicktime' do not need to be ticked. Try unticking one at a time and see how you go. The less you have going in startup the quicker you'll be able to start using your programmes that you use regularly.