Inserting the BIOS Back
Be careful to not place the chip in wrong position, or you will probably literally burn out the BIOS chip. Both the chip and its socket have a marking called “pin 1”. You have to march the pin 1 marking on the chip with the pin 1 marking on the socket.
Figure 8: Pin 1 notches on DIP chip and socket.
Figure 9: Pin 1 notches on PLCC chip and socket.
PLCC chips are easing to be installed back, because one of its side (the pin 1 side) isn’t squared but triangle-shaped. Thus, it is impossible to insert them in the wrong position.