I'm build a circuit with a pic18F4550, I'm trying to power up 8 leds, but I get no output voltage from any output pin.

I suspect the pic might be broken because while building the circuit I made two mistakes:
- I wired the 5v regulator wrongly, and supplied 9v to the pic for the first time
- on one side of the pic I connected power to vss and ground to vcc

However, after noticing my mistakes and fixing them, I reprogrammed pic and got no error (I'm using MPlabX and PicKit2). Also the pic is not heating up or anything like that.

I triple checked all the wires and schematics, but there is only 5v in the two vcc pins, and 0v in the output ports.

This is my program:

    #pragma config XINST = OFF
    #if defined(__XC)
        #include <xc.h>        /* XC8 General Include File */
    #elif defined(HI_TECH_C)
        #include <htc.h>       /* HiTech General Include File */
    #elif defined(__18CXX)
        #include <p18cxxx.h>   /* C18 General Include File */
    #endif
    #if defined(__XC) || defined(HI_TECH_C)
    
    #include <stdint.h>        /* For uint8_t definition */
    #include <stdbool.h>       /* For true/false definition */
    
    #endif
    #define NO_CLRWDT
    #define SYSCLK          20000000
    #define PLL             4
    #define SYSCLK_PLL      (SYSCLK*PLL)
    #define FCY             (SYSCLK_PLL/2)
    
    #include "system.h"        /* System funct/params, like osc/peripheral config */
    #include "user.h"          /* User funct/params, such as InitApp */
    
    void main(void){
        TRISD = 0x00;
        TRISC = 0x00;
        PORTC = 0xFF;
        PORTD = 0xFF;
        while(1){
        }
    
    }


Could my pic be broken? and how can I check or debug the issue? I'm newbie at both soft and electronics.