Tinybootloader cant detect my PIC16F877A when second time

[lihker]

pls help, when first time to check pic the tinybld show:

Connected to \\.\COM1 at 19200
Searching for PIC ...
Found:16F 876A/877A

then i write flash to the pic:

Connected to \\.\COM1 at 19200
HEX: 23 min old, INHX8M,16Fcode+cfg, total=32 bytes.
Searching for PIC ...
Found:16F 876A/877A
WRITE OK at 15:25, time:0.156 sec

after finish i check pic again, show me this:

Interface to TinyBootLoader, v1.9.8
contact: claudiu.chiculita@ugal.ro

--------------------------------------------------------------------------------------------------

Connected to \\.\COM1 at 19200
Searching for PIC ...
Found:16F 876A/877A

Connected to \\.\COM1 at 19200
HEX: 23 min old, INHX8M,16Fcode+cfg, total=32 bytes.
Searching for PIC ...
Found:16F 876A/877A
WRITE OK at 15:25, time:0.156 sec

Connected to \\.\COM1 at 19200
Searching for PIC ...Not found,
ERROR!

i dont what is the problem hope anyone can help me.tq

#include <pic.h> 


//========================================================================
//	Configuration
//========================================================================
__CONFIG ( 0x3FF2 );				//configuration for the  microcontroller


//=========================================================================									
//	Define
//=========================================================================
#define	led1		PORTB			//D0~D5 
#define	led2		RA0				//D6
#define	led3		RA1				//D7


//	main function						(main fucntion of the program)
//==========================================================================

void main(void)
{

//set I/O input output
TRISA = 0b00000000;						//configure PORTA I/O direction
TRISB = 0b00000000;						//configure PORTB I/O direction
TRISC = 0b00000000;						//configure PORTC I/O direction
TRISD = 0b00000000;						//configure PORTD I/O direction
TRISE = 0b00000000;						//configure PORTD I/O direction

//program start
	while(1)							//Infinity Loop
	{
PORTA = 0x02;							
PORTB = 0x2A;							
}
}

 

[PICMICRO]

Maybe you have loose connection somewhere or the crystall isn't placed properly (i.e. PIC isn't running).
Recheck everything and try a few times.