Hi 3la, and welcome to the HP Forums! :smileyhappy:
I understand that you deleted your IDT audio from the control panel and now your audio is not working. I will try my best to help you with this problem. To better assist you, could you please tell me your model number of your laptop. Here is a guide for How Do I Find My Model Number or Product Number? In case you need it.
I am including this document in hopes that it may help resolve your issue. :smileywink:
Using Recovery Manager to Restore Software and Drivers (Windows 7)
Please let me know and I will be happy to help.
Thank you and have a great day!