Relatd to slow working

Is your disc scratched up? Clean the optics with a microfiber cloth, and try another disc. Try restarting your computer.

Here you go...I hope this works for you....
CD/DVD Is Not Recognized
Many times, after inserting a disc into the CD or DVD drive, the disc is not recognized by that drive. CD-read and DVD-read issues can be caused by many sources. Perform the procedures presented in this General Computer Advice article when troubleshooting CD-read and DVD-read issues.

Begin with the first procedure and continue through the list. Try using the CD or DVD after each procedure is completed. For any procedure that requires changing current system settings, record the original settings before completing the procedure.

1. Verify that the correct disc (CD/DVD) is used when prompted to insert the disc.
2. For programs on DVD, verify that the drive containing the DVD is a DVD drive and not a CD-ROM drive. Most DVD drives will haveDVD printed on the front of the drive. For programs on DVD, consider the following:

• DVD drives can read both DVD's and CD's.
• CD-ROM drives can read only CD's.

1. If multiple disc drives (e.g., CD-ROM and CD-RW, or DVD and DVD-RW, or CD-ROM and DVD-RW, etc.) exist on the computer that can read the disc (refer to the items under Step 2), insert the CD or DVD into the other drive and try the program again.
2. If you are attempting to install a program and the installation does not begin after inserting the CD/DVD into the proper drive, refer to the program's instructions for the installation procedure.
3. Clean the CD/DVD in the following manner:

1. Place a small amount of nonabrasive liquid soap on the shiny side of the CD/DVD.
2. Using your fingertips and warm water, gently rub the soap on the CD/DVD in a circular motion.
3. Rinse the CD/DVD thoroughly and dry it using a clean, soft T-shirt or lint-free towel. (Do not use paper towels or tissue paper.)

1. Try to use a different CD or DVD in the drive to see if that disc can be read.
2. If possible, insert the problem CD or DVD into the DVD or CD drive of another computer to see if the issue persists.

it sounds like the cd rom driver in windows is not installed correctly try reinstalling the cd rom if that does not work the cd rom needs replaced

Hello my friend, try to insert another brand new disk with no scratch to test if its still work. If it is not then try to ship back the device to its supplier or find technician in your place to assist you in order to check if that device is still working. Sometimes the laser eye of the DVD ROM is something to do with that. also try to  clean your DVD ROM if you have disk cleaner.  Hope thisadvice helps you. Just contact me if you need more assistance. Just reply to thispost. Thank you

may be your cd/dvd rom is weak. replace the dvd rom.

Hi,

The laser carriage was stucked in one posistion, it works fine after I've manually release it.

Thanks

Try different discs to determine whether it's the disc or the drive. If it's the drive the the lens on drive might be dirty, try cleaning it with proper "Cleaning CD" if that doesn't help the drive it self might be going out (as in the mechanical parts on the drive). In the later case the only solution is buy a new drive.

Try running a cleaner disc in the unit if that doesnt work try the following.

Starting at my computer... Right click on my computer icon.

Go to properties.

Then Hardware tab then go device manager. Right click on cdrom in device list. Select uninstall then reboot the computer. If this doesn't help replacing the unit will be necessary.

Hi,

So you mean each time you insert the disc it ejects automatically?or you have a problem reading with the disc?

this is a READ error known as a CYCLIC REDUNDANCY READ ERROR.
If the CD ROM is not able to read from the disc .. it gives u this error
This can come due to many reasons
1. OLD CD ROM - not able to read data properly
2. CD with lot of scratches
3. CD not written properly: Data not burn properly on CD at the time of its make.

Solution: Try to insert a new CD in it and then check whether it works or not
or get a CD LENS CLEANER DISC which will remove any kind of small debris on the lens on the CD ROM and then it will work.
This would surely help