Hi, I'mCustomer Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply ASAP.
What is the model of your Dell computer, it is a laptop or a desktop ?
What is the version of your windows OS ?
Thank you, ***** ***** installed any updates recently?
Right click on start, Type devmgmt.msc in the Search bar and press Enter
It will open Device ManagerExpand Sound, video and game controllers and let me know the name of devices listed under itAlso tell me if you see any device with an yellow ! or ? mark next to it in Device Manager window
Do you still need help please?