My dimension 4600c wont always read discs

The laser is unable to read the information on the disc, could be due to fingerprints or smudges on the disc.
1 Clean the disc with isophropyl alcohol which is available from
chemists or supermarkets. Get a spray one if available, if not apply liberally to a cleaning cloth and clean the disc from center outwards in a straight line. (not in circles). NB Always check the ingredients you want 100% if you can but if not the higher the better.
2 You can purchase a cleaning disc kit from most music stores because the laser focusing eye may need cleaning as well. Good to do this every few months anyway.
3 The laser may be faulty and replacement may be required or purchase a new player.

Maybe the lasers ok but the disc motor is not spinning the disc.

try getting new dvd drive

Windows lifecycle fact sheet - Windows Help you need to read the section on Windows XP

REMOVE BELT AND SEE IF IT WILL START AND RUN ,IF SO CHECK PULLEYS TO SEE IF AC OR WP MAY BE LOCKED UP

Ive only had mine for 2 months and it just stopped playing dvds all together. I had a brand new dvd playing, went to switch it to another new dvd movie and it wouldnt read it or any other dvd Ive tried. I havent tried a blu ray disc yet.

clean the laser using a lazer disc cleaner not only does the disck get dirty but the lazer too when its too dirty it wont read the disc -- disc error
heres a piture of one you get them from electronics shops

Hi i have the same issue same 2004 model year. Its reads...
"Unable to read data, Check if map DVD is Correct"....what? I cant play a dvd but it plays all my cds so far. Can someone please help me with this problem!!! Any Solutions?

check your boot settings in the comp bios/cmos set-up, you should the boot order of the devices in your system, make cd/dvd romyour 1st boot device then make the hard drive your 2nd boot device then so on, save the changes you had made and reboot insert your windows installation disc then from there it will boot to the xp cd

I have the same issue, along with a Rear Check issue at power up, and the fan stopped working about a month ago, so three strikes and your out, I would not recommend this product due to the quality. My Oniko was purchased years ago and is still going strong, I moved to an apartment and wanted the wireless ease with the back speakers, never again with this brand. My Samsung LCD is acting up now too, it is only 15 months old, and won't power up right away takes like 5 attempts, unreal