You may have a bunch of programs in startup that you can disable. Generally, Firefox would not be in your startup.
If you would like, install CCleaner and post the THREE lists using the directions below for a second opinion.
Use CCleaner to remove Temporary files, program caches, cookies, logs, etc. Use the Default settings. No need to use the
Registry Cleaning Tool...risky. Pay close attention while installing and UNcheck offers of toolbars....especially Google.
After install, open CCleaner and run by clicking on the Run Cleaner button in the bottom right corner.
CCleaner - PC Optimization and Cleaning - Free Download
Post the three lists mentioned below using CCleaner.
Open CCleaner and click on Tools. Choose Startups. On that page you will see a list of Windows Startups and at the top tabs for each browser and Scheduled Tasks.
At the bottom right of that page you will see a button when clicked will allow you to Copy and Paste the list of Windows Startups and Scheduled Tasks into your next
post. Please do that.
Open CCleaner and click on Tools. Choose Uninstall. On that page you will see a list of programs installed on your computer and at the bottom right of that page you
will see a button when clicked will allow you to Copy and Paste that list in your next post. Please do that.