Would not start, then started, now it will not start?

About a week ago I accidentally left the key on for about 30 minutes. Once I realized I shut the key off and the car would not start. Charged battery, charger said it was full tested battery it read 11 volts. Car would not start the automatic lights interior light and turn signals and trunk would not work. I manually could turn on headlights, seats would move. Mirrors would adjust, A/C/heater would come on. Windows worked as long as key was on the on-position dash lights, but fuel gauge read empty. It sat for 6 days because I could not figure out the problem. Today I get the car to think what it could be and I turn the key on and the turn signals is working and the car starts all lights are on trunk opens everything is working just fine. I started it 4 or 5 times drove it about 6 blocks now it won't start, same light won't come and trunk won't open any ideas I'm stumped.