I am having trouble while connecting my arduino uno to pc I am using windows 7 when I connect the board the green light is on and the orange light is blinking continuously I cannot get the board info in the tools drop down menu and the sketch is not uploading .In the device manager ports section I can see Arduino Uno com1 with yellow sign and when I update the driver then in the device status I can see this {windows cannot initialize the device driver for this hardware. (code 37) }
Have you tried installing the CH340 drivers (not included with the IDE)
Maybe include a picture of your board or where you got it to see if its a clone or it needs a different driver which is in the drivers folder of the IDE installation.