electric shock by mistake MacBook Pro mid 2010

i open my macbook pro mid 2010, trying to replace the battery, and i’m using a iron screwdriver. i touch one component by mistake with iron screwdriver and its cause an electric shock.

i was surprised because i had already removed the power and the battery but it still cause an electric shock.

when i done replacing the battery, i see my macbook run much slower, didn’t detect the battery, the fan run faster and the macbook run with much stuck / lag.

what i have to do ?