Suddenly CD DVD do not shows in My Computer. When any CD / DVD in the tray it power blink and then stop

Unplug the machine. Have a look behind the tray flap. there should be a very small hole to push a paperclip or similar into to release the tray.

Most likely a problem with the reader on the CD/DVD Drive.

Very easy to swap out a different CD/DVD Drive. Add the new device and see if that resolves the issue.

1) Computer on open the CD drive tray. Turn the computer off leaving the tray open. Unplug the computer from power.

Use a can of compressed air for computers, and clean the drive out.\
Break the plastic lock tab off of the nozzle, of the can of air, attach the plastic straw to the nozzle.
Aim in a slightly downward fashion as you spray air into the optical drive. (CD drive)

You are trying to clean, dust, dirt, etc. out of the inside of the drive, but are mostly trying to clean the laser optical eye, located towards the bottom of the optical drive.

Allow a few minutes for any propellant that came out to dry, then plug the computer back into power.
The CD drive tray will shut automatically.

CD drive tray will not open, and there is no blinking light on the front of the drive?
Trash can it, buy a new one.

An optical drive is a mechanical device. It's 'Life-span' is rated in hours of usage.
A drive that does not respond with a blinking light is beyond it's Life Cycle.

Buying an optical drive is Much cheaper online, than buying from a large chain store locally, IMHO.

1) One example of a CD/DVD drive that is an IDE unit, (PATA),

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5077988&CatId=88

Regards,
joecoolvette

Yes, the laser sensor has died and the entire unit must be replaced.

YOU need to try cleaning the lense if not work still then i m afraid you will have to change the cd/dvd drive

Does the tray open for you? Re-boot the computer and go into the BIOS and see if it is listed by the BIOS. Did you accidentally remove the hardware? Go into the control panel and add new hardware and see if it detects the drive and re-installs it. Otherwise the drive might have stopped working.

almost all computer CD drives comes with a small hole at the front near the eject button. A straightened paper clip will do after powering in down or not.

Try this :

Disconnect the printer from the computer.
Turn it off & make sure the CD/DVD tray is closed then turn it back on.

***

Here's generic instruction for you:

If you are receiving an error pertaining to the CD TRAY NOT BEING INSERTED CORRECTLY, please do the following:

Recommendations:
-Don't force the CD/DVD tray into the printer.
-Make sure your printer is powered on, and the output tray is in the upper position.
-Please ensure there is at least 3 inches of space behind the printer, or the CD tray may eject.

Included, are the correct CD/DVD loading instructions. Please follow the instructions below:

CD/DVD LOADING:
1. Ensure the printer is powered on. Remove any paper from the sheet feeder.
2. Push in the paper support extension on the printer, and close the paper support.
3. Push in the output tray extensions, but leave the tray open.
4. Lift the output tray. Place one hand on the top of the printer, and pull up on the output tray until it stops. Lay the tray down in the upper position.
5. Place the CD or DVD into the CD TRAY with the white (or printable) side facing up. Note: To print on small 8cm CDs, please place the small CD ring on the tray first, then place the CD inside the ring.
6. Slide the tray into the tray guides located in the output tray. Push in the guide until the arrow on the tray matches up to the arrow on the tray guide.
7. Press the PAPER button to load the CD/DVD into the printing position. The CD is correctly loaded when the printer's POWER button stops flashing.

General tips for CD and DVD printing:
-Burn data/video/images onto CDs or DVDs before attempting to print on them.
-Do not use thermal-printable or regular CDs or DVDs in the printer.
-Moisture or fingerprints on the printable surface of the CD may cause marks or smearing to appear after printing.
-All printable inkjet media is different. Some surfaces will absorb ink better than others. If output appears banded, faded, or streaky, print a Nozzle Check pattern to confirm that all colors of ink are printing completely. If the ink does not completely dry or smears after 24 hours curing time, you may need to use the Epson Print CD tools to adjust (lower) the print density.
-The only supported resolution for CD/DVD printing is 1440 dpi (aka "Photo")
-Borderless printing and printing on the "inner circle" (plastic around central hole) of CDs is not supported.
-Do not use the "print preview" feature provided by the Epson printer driver as it will only show the image on a blank field and does not offer a clear indicator of where the image will print.
-The Epson Print CD software works best with JPG images and may not import some TIFF images.

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Good Luck, Read & follow instructions/Please dont for get to Vote/Thank You.

There some few tips you can try. Power down the computer then open the cd tray by inserting a sharp object in the small hole near the tray. Look for this hole, then using the sharp object push it pretty hard. With the other hand try to pull the tray out. Once you've pulled it power on the computer (with the cd-rw's tray opened) and watch what the cd-rw is actually doing now. If after it retracts the tray it is doing the same, you will need to dissasemble it. If you are willing to try this, please post another message and also specify there what did the cd-rw drive do when you've applied the method i've told you before.