When I power up pi cpu heats up to 40-50 c and red, green leds are on, tried to use other sd cards but nothing, last what i did tried to connect gpio pins with ide cable.
Modern IDE cables have 80 wires (still 40 pins). Do the individual wires look very slim? Unfortunately if it was an 80 wire cable the Pi may be dead. It's not just a straight through cable, some pins are interconnected. The gpios may have been shorted and that could have killed the Pi. – joan