Power button has two red rings at start up with error noise. why is this?

What you saw is what is called the Red Ring of Death. Microsoft charges for support in such cases however, most people will just replace the xbox as it is cheaper. You can find out more information on the 4 red rings on the Microsoft website. For the most part, the 4 red rings are based on overheating of your processor. Which means you might need to go and purchase yourself a new xbox. I found this site that might help somewhat, it gives a list of error codes and more information. Hope this will help.

http://www.llamma.com/xbox360/repair/Xbox-360-error-codes.htm

4 flashing red light = av cable not connected. double check id av cable is connected properly. try using different av cable.

3 flashing red light = hardware problem . may require repair

2 flashing red light = overheating

1 flashing red light on bottom right LED with error code = hardware failure may require repair

These red leds(also know as the red ring of death or RROD) around the power button is a way for the xbox to tell you that something is wrong. Different combinations usually have to do with different errors. I recommend that you send it to a repair shop or back to microsoft if the warranty is still good. Don't forget to give them any relevant information and which leds were flashing. Also an error code would help them alot.

Red Ring of Death: Red Flashing XBOX 360 Lights Explained Common Xbox 360 Red Ring Errors The XBOX has a reported 54.2% failure rate which makes the XBOX 360 gaming consoles' worst "lemon" to date. If you find yourself with the red flashing lights error, --> follow this guide to try and pinpoint the problem with your XBOX 360.

1 Red Ring = Serious Hardware Failure
I f your XBOX 360 has a 1 red flashing light error, you're more than likely in big trouble. The 1 flashing red ring of light can be due to GPU or CPU failure, RAM overheating, a DVD drive error, or some serious problem with your Xbox 360's internal components. The most common 1 flashing red ring lights error is the E74 error. The E74 error is no easy fix for the Xbox 360 and usually has to be repaired by the manufacturer [though some have managed to repair it with the heat gun trick - but be careful]

2 Red Rings = Overheating
Mostly all red flashing lights on the Xbox 360 rings are due to overheating in some way or other, but the 2 red rings singles out overheating as the main issue. When doing the X-Clamp fix the 2 red rings are required to fix the Xbox 360 by overheating the CPU. If you get this Xbox 360 error without doing the X-Clamp fix, you probably just need to let your Xbox 360 cool down for a few hours. Make sure that all vents aren't blocked off and that your Xbox fans are working properly in order to repair this problem.

3 Red Rings = Basic Hardware Failure
The most common error on the Xbox 360 is the 3 red rings - also known as the Red Rings of Death (RRoD). This flashing lights problem is the main cause of Xbox 360's 54.2% failure rate. The 3 red flashing lights can be due to lots of different errors but is mainly due to the X-Clamps in your Xbox 360 and overheating. Fortunately, lots of people were able to fix this issue using the X-Clamp and heat gun fix. Follow this list of error codes to find out the real issue with the 3 red rings because there are quite a few of them.

2 red rings is over heated 3 is harware fail 4 is missing power and 1 is the hardest to fix for exact error code turn on hold controller connect and press eject 4 is for 0 1 is for 1 and so on remember the code and look it up it will tell you the problem most likely red rings of death so send it to microsoft call at 1-800-4my-xbox or look up a guide or buy one off ebay there cheap and easy

Three flashing red lights around the Xbox 360 power button (nicknamed the "Red Ring of Death" or "Red Lights of Death" or "Red Ring of Doom"), instead of the one to four green lights indicating normal operation, represent an internal problem that requires service. Warning signs may include freeze-ups, graphical problems in the middle of gameplay, such as checkerboard or pinstripe patterns on the screen, and sound errors, and the console only responds to pressing the power button to turn it off. These events may happen once or several times until the hardware failure occurs, or not at all. If the console freezes occasionally, the error will not necessarily follow. The technical problems seem to affect some generations of consoles more than others. e.g. Xbox 360 60GB This error code is usually caused by failure of one or more hardware components, although it can indicate that the console is not receiving enough power from the power supply, which can either be due to a faulty power supply or if the power supply cable is not fully inserted into the console. The 3 flashing lights can also be caused by power surges; if the console is connected to an outlet that receives a power surge, it may have a failure and the 3 lights will appear as long as the console is plugged into the outlet. Turning off the console, unplugging all power cables and plugging them back in, and restarting the console will fix the issue in this case. hope this helps

Three flashing red lights around the Xbox 360 power button (nicknamed the "Red Ring of Death" or "Red Lights of Death" or "Red Ring of Doom"), instead of the one to four green lights indicating normal operation, represent an internal problem that requires service. Warning signs may include freeze-ups, graphical problems in the middle of gameplay, such as checkerboard or pinstripe patterns on the screen, and sound errors, and the console only responds to pressing the power button to turn it off. These events may happen once or several times until the hardware failure occurs, or not at all. If the console freezes occasionally, the error will not necessarily follow. The technical problems seem to affect some generations of consoles more than others. e.g. Xbox 360 60GB This error code is usually caused by failure of one or more hardware components, although it can indicate that the console is not receiving enough power from the power supply, which can either be due to a faulty power supply or if the power supply cable is not fully inserted into the console. The 3 flashing lights can also be caused by power surges; if the console is connected to an outlet that receives a power surge, it may have a failure and the 3 lights will appear as long as the console is plugged into the outlet. Turning off the console, unplugging all power cables and plugging them back in, and restarting the console will fix the issue in this case.

This is the red light error caused by overheating you will need to send it in or you can fix it yourself using a good guide

I hate to break it to you, but you may have gotten the Red Ring Of Death. It happens when playing a game and it is transmitted through online play through Xbox Live. 3 red lights will appear around the power button when your console has become infected. The Red Ring of Death may have infected your console causing it to shut down. Most Xbox 360 consoles won't turn back on but some do turn back on but they just won't play games, they will freeze up and have the dotted lines and make the buzzing noise. I'm sorry, but I think you may need a new console. You're in luck if it's still under warranty. Hope this helps!!!!

hmmm.. The Ring of Death.

The 4 rings mean power faliure.
The 3 rings mean the CPU has been melted.
The 2 rings mean there is a CPU overheat error.
The 1 ring means there is an internal error.

Hope this could of helped you.