Blinking Amber light 2 and 3 dell 210L can't boot

You are going to get a range of opinions on this one. Some suggest a new power supply and others more invasivel repairs involving removal of the front panel and soldering!

http://www.tomshardware.com/answers/id-2277673/dell-wont-boot-amber-blinking-light.html

Normally, the amber power light means either a power supply or motherboard issue. There should also be lights on the back numbered 1-4 that give a specific error code depending on which ones are lit up. Here is a link to the manual so that you can figure out what the LED codes mean:
Dell OptiPlex 210L Quick Reference Manual Diagnostic Lights

An amber light means your computer isn't reading the hard drive or CD right, Take it to a professional to get this corrected

A steady or Amber blinking power button indicates a low voltage problem. This can be caused by a defective power supply or a defective motherboard. Just to make sure that nothing else is causing the problem, remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. Look at the USB ports to see if any are damaged.

Click here to visit dell support. The documentation provides details about the light codes and diagnostic procedure.

I think it is a power issue, which is usually indicated by amber light on dell systems. I came accross dell systems with similar indication and the issue was improper voltage either due to faulty power supply or bad connection.
Therefore, i suggest that: -
First, make sure that the connections and voltage to your system is proper.
Also, get the power sully unit checked by a professional for its proper functioning. I may require repair or replacement.

Let me know if any further clarification is required. Hope this helps!
CreativeTECH

Diag LED info is here
http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell
Appears to be a bad power supply

Open the PC, there is a small battery (a watch battery), take it out for 2 hours then put it back in.

Vaughn it sounds like the power supply is going bad, try another known good working power supply. If that doesn't work then the motherboard would need to be replaced. If the power supply isn't giving the correct voltages that could cause the computer not to turn on. If the motheboard isn't able to convert the voltages properly then the motherboard could be faulty.

When you mean the amber light, is that the blinking hard drive access light or the power light? Different cases have different colors on it. Mine has blue and green lights.

If you see the boot screen (bios) and then after it goes to boot, does it blink and hang?

This could be a simple operating system issue, hard drive or hardware/motherboard issue. If you could provide more information, that would help.

Hi,
To help you better , could you let me know , when the system goes into sleep mode, the power light in the front of the tower is it amber or blinking amber or is it of some other color.

If the power button is blinking amber , the power supply on the unit is going bad.


Thanks
Proton