What do you do when the instrument panel goes dead after battery trouble I have seat belt light on and i can see the transmission lights - Park Drive Reverse - lights blinking?

Toyota Avalon - 2001 - My battery died, and in the process of replacing it, the dashboard guages and information console stopped working, dead! I did a search on the internet and found: "My 98 LS400 battery drained since i left the door open accidently and interior lights were on. I did a jumpstart and the car started and everything works except for the DASHBOARD.

Everytime I start no action in the needles and no lights on Dashboard. I have seat belt light on and i can see the transmission lights (Park, Drive, Reverse) lights blinking. " The answer that was attached: I "had a similar problem on my 2000 Toyota Avalon and it was the battery. Instrument lights would not come on after some work on the car. If battery is OK, disconnect the negative lead and let system reboot. " I never thought I would need to reboot my car! Gotta love the internet!!