Xbox 360 S red dot with four flashing green lights

For the red dot issue read this:

General Hardware Failure
The specific type of hardware failure can be determined by a "hidden" error code:
- Turn the Xbox 360 on, and wait till the red dot is on
- Press and hold the sync up button (the small white one), while holding that button press the eject button.
- The LEDs will now blink the first number in the code (as described below).
- Release the eject button and press it again.
- The LEDs will now blink the second number of the code.
- Release the eject button and press it again.
- The LEDs will now blink the third number of the code.
- Release the eject button and press it again.
- The LEDs will now blink the fourth number of the code.
- Release the eject button and press it again.
- The LEDs will go back to the 3 flashing lights.

You should be able to determine the error code by looking at the lights.

Here is how you interpret the LEDs to get the code number:
* All four lights flashing - 0
* One light flashing - 1
* Two Lights flashing - 2
* Three lights flashing - 3

0001 - power supply problem
0002 - power supply problem
0003 - power problem could be the PSU could be the GPU/CPU, somehow the console isn't getting clean power from the power supply.
0010 - over heating
0011 - over heating
0012 - over heating
0013 - over heating
0020 - not yet known, possibly overheating
0021 - DVD Drive Time out - Can be caused by problems with a firmware flash. This is also speculated to some time be caused by a problem with the Southbridge chipset on the motherboard.
0022 - GPU Error / GPU Overheating
0102 - unknown error - literally means the console does not know what is wrong. Possibly a short or cold solder joint somewhere
0110 - not yet known
1022 - not yet known

Solution(s):
- Try restarting the console.
- If restarting the console does not resolve the behaviour, follow these steps:
* Turn the console off.
* Unplug all the power and AV cables from the console.
* Unplug the power cord from the wall socket.
* Firmly reconnect all the cables.
* Turn on the console.
- If these steps do not resolve the behaviour, turn the console off, remove the hard drive, and then turn on the console. If the red light is no longer displayed, turn the console off, re-attach the hard drive, and then turn on the console.

Hi there!

It seems to be an issue with your A/V connection or cable. Please check your troubleshooting guide here on this link https://support.xbox.com/help/xbox-360/store/fl...

If the solutions from that link didn't work, I am afraid your console needs to be serviced.

one time only the green lights flashing and then the middle dot remains red

similarly if I start without hdmi or avi cord the green light remains but I cannot see the display

If it's flashing red light, it's a sign that the console has overheated, if it's just solid red light, it's known as the "Red Dot of Death", which is the same as the older models of Xbox 360's "Red Ring of Death",

Here's a link to someone who has the same problem with their Xbox 360 S...

https://answers.microsoft.com/en-us/xbox/forum/all/rrod/07b1e276-4965-4c91-836a-005684ba20af

Try this it might help

support.xbox.com/.../flashing-red-light-on-the-xbox-360-s-console-power-button-2122791