You probably have too many programs and services trying to start up all at once.
Programs automatically start for a variety of reasons and you need to decide if you need them at the start up or not. As per my knowledge, you can remove the below programs from start up as they are applications which can run after you have successfully logged in to your PC:
Programs like Skype and other instant messaging solutions automatically start up by default, keeping you signed in so you can be contacted by other users. They can be removed.
Steam automatically starts to download the latest updates for your PC games in the background, while uTorrent and other file-downloading programs automatically start so they can continue your active downloads. They can be removed.
Programs like Dropbox, Google Drive, and SkyDrive start up with Windows so they’re always running, downloading and uploading your files. They can be removed.
For example, uTorrent is clearly starting so it can continue downloading files, while Skype is starting so it can keep you logged in in the background. if you don’t care about continuing to download files or automatically logging into Skype, you can disable these programs and load them normally when you want to use them.
How to Disable Startup Programs
You can often prevent a program from automatically starting in its preferences window. For example, common programs like uTorrent, Skype, and Steam allow you to disable the autostart feature in their options windows.
When I connect an external microphone to the jack, it is not working. I can see it in the "Sound" tab, but the levels is very low. I have tried with several microphones.