Bonjour!
Well in theory the above has to work... maybe your PIC programmer don't program the configuration fuses... or don't have the 16F877A option in the list?

Make sure you have all Vdd and Vss pins connected.
0.1 uF close to your PIC (on Vdd/vss line)

For now use a 4MHz crystal (or resonator) and use XT_OSC.


Bonne chance!