My DVD RW AW-Q170A read some dvds but dont show their content

you might want to try and update the firmware on the DVD burner, find out with the vendor if there is a fw version and how to do it, if not I would suggest hiring a professional.

The actual dvd were also burned somewhere, did you burn your stuff correctly, try playing those cd on another computer.
CLEAN, WASH YOUR DVDs CAREFULLY DON'T DESTROY THEM.
It doesn't look like your dvd drive is faulty.
Please feel free to ask me for further information.

It is a burner.
With DVD burners you cannot read disks, only write to them.
This cannot be fixed

Follow these steps

1. Click on Start
2. Click on Run
3. Type in REGEDIT
4. Click on OK
5. Click on the plus sign (+) next to HKEY_LOCAL_MACHINE
6. Click on the plus sign (+) next to SYSTEM
7. Click on the plus sign (+) next to CurrentControlSet
8. Click on the plus sign (+) next to Control
9. Click on the plus sign (+) next to Class
10. Click on the plus sign (+) next to {4D36E965-E325-11CE-BFG1-08002BE10318}
11. On the right pane, click to highlight Upperfilters
12. Right click on Upperfilters
13. Click on Delete
14. Click on OK
15. On the right pane, click to highlight Lowerfilters
16. Right click on Lowerfilters
17. Click on Delete
18. Click on OK
19. Close the Registry Editor
20. Reboot the computer

Hi i have Sony AW-G170A on 2 pc's and almoust at same period both pc's started not to read DVD cds, cds that were writen by the same drive so ive check the net and end up updating the Firmwares 1.71 to 1.75 so check this link. And get AW-G170A Firmware 1.75 then u gonna need Binflash to update the Firmware get Win32 GUI version if u use Win Xp. Open the program press Flash find the location of the 1.75 Firmware and update it restart pc and it should work it worked for me.

go to nero 6.66 and use imation discs, if your os is running ok and you do not suceed whith that i told you, your dvd unit is bad.

Check that the writable DVDs you are using are compatible (+/-) with your Sony DVD-RAM.
Go to Windows Explorer and check to see if the Sony drive is visible. It may not be connected or the Jumper switch may be set incorrectly.
Check you have drivers installed, take a look in Hardware manager.
Sometimes, it's a little difficult to copy CDs and DVDs when you have more than one burning suite installed - for some reason, they 'just don't get along'. Try uninstalling any suites other than Nero.
Or it may just be that your Sony CD-RW drive is just that, and your DVD-RW drive is just that. So it wouldn't be possible to write DVDs on the CD-RW and CDs on the DVD-RW? Though I would assume Nero would detect that and use your hard-drive as temporary storage.
In Nero SmartStart, have you selected the CD or DVD tab to correspond to the project you're burning?

MAN TRY ANY OTHER DVD SOFTWARES
FIRST OF ALL YOU GO AND SEARCH FOR K LITE MEGA CODEC  DOWNLOAD AND INSTALL
WHAT IS U R OS

Try this..
http://club.cdfreaks.com/f44/problems-dvd-burned-sony-aw-q170a-cant-read-standalone-dvd-player-230783/

TRY CHANGIN THE CABLES
BFORE THAT
TRY A  DIFFERENT PLAYER  TRY MEDIAPLAYER
CLASSIC