Car just over will not start do you think computer messed up?
Hooking up the battery backwards causes a surge that blows the engine main fuse.The main fuse is usually found in the engine bay's fuse box.
If your lucky you blow many fuses. But alot of the times every electrical component will puff magic smoke and will need replacing. Especially the Computer, Radio and Body Control Module.
Now What to do.Click the link below for step by step troubleshooting:
http://carrepairworld.blogspot.com/2016/06/hooked-car-battery-up-wrong-way.html
This will help.
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