Yellow light blinking on my Dell Inspiron one 19 and won't start up

If the power light doesn't come on at all, it could be the power supply is dead, or the power switch is defective.

Check to make sure the power cord and power supply cables are securely connected.

Here are some diagnostic tools for DELL computers.

http://www.dell.com/support/Article/us/en/19/SLN284978/EN#2012_to_Present

take the battery out and hold the power button for like 15 seconds. then put battery baCK on and plug it in but do not try to power on. lets saee what goes? remember not to power on

DELL BEEP CODES
Beep Codes Beep Code Description Failure Coverage 1 System Board: BIOS ROM failure System Board, covers BIOS corruption or ROM error 2 Memory No Memory / RAM detected 3 Chipset Error (North and South Bridge Chipset DMA/IMR/ Timer Error for Intel platform); Chipset Error System Board Chipset Failure Time-Of-Day Clock test failure. Gate A20 failure Super I/O chip failure Keyboard controller test failure. 4 RAM Read/Write failure Memory failure 5 RTC Power Fail. CMOS battery failure 6 Video BIOS Test Failure Video card / chip failure 7 CPU Cache Test Failure CPU failure 8 LCD LCD failure

disconnect the battery completely and wait atleast 30 seconds then re attach and try to start it again.

An 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.

Here is the info straight from Dell. looks like you have an internal power issue. You will most likely need to contact Dell directly for assistance, they are pretty good about giving support even if the system is no longer covered under warranty.

If the power light is blinking amber -
The computer is receiving electrical power, but an internal power problem might exist.

• Ensure that the voltage selection switch is set to match the AC power at your location (if applicable).
• Ensure that the processor power cable is securely connected to the system board.

More battery tips for you:sony laptop battery apple laptop akku

Try running thed diagnostics on your computer by pressing the Fn+Power button.

If the diagostics doesn't come up or the system doesn't power up at all, then you need to replace the motherboard.

Sounds like the system is not POSTing here are the basic steps:

http://www.fixya.com/support/r3581893-how_to_troublehoot_a_portable_compouter_

Try this: remove the battery and unplug the power, hold down the power button for 10 seconds, then plug the power back in, and try turn it on again. If this doesn't work, check the power plugin port, if anything in there is moving around, it might be broken and need to be repaired. Check for a local electronics or computer store for that. The only other problem I can think of is that the motherboard died, probably from over-heating. This usually requires a new laptop, or an equivalent price for a new motherboard. Good luck, I truly hope the first one works.