Go to start, run, then type msconfig. On the system configuration utility click the startup tab on the far right. Everything listed there is what is starting up. I recommend only antivirus and firewall loading up and nothing else.
Once you have done that, hit apply and close and restart the computer. A window will pop up saying system configuration utility has been used, just click the box not to show it again and close it.
There is a point in wisdom and knowledge that when you reach it, you exceed what is considered possible - Jason Schoon