Can the computer be fried?

Likely caused by reversed polarity at some point during battery install .. Seek qualified hands-on help as suggested.

It is possible however I suggest you get it checked out that has experience in Audi. There are a lot of information traveling through the computers. I am assuming your vehicle starts and runs. How many miles are on the car? what size engine? Did this all start after the battery? Was there any problems before the change of the battery. We would be happy to check out your vehicle. give us a call 224-801-6094 ask for Ira Action Auto Services Inc 648 E Northwest Hwy Palatine, IL 60074

we have to perform the right logs for the throttle body and the pcm call us at 312-733-6543 ask for shadi