[QUOTE=mayank1979;2157996]my lg GSA-H55N dvd writer is not playing Cd’s but plays Dvd’s fine,if some one can help me with this i will appreciate it:)[/QUOTE]
Welcome to the forum
To eliminate any software causing this, can you boot from your Windows CD (assuming you are using Windows, of course!).
You will have to enter your PC’s BIOS and change the boot sequence, to make the LG the first boot device.
If it boots successfully from the disc, you have a software problem. If it fails to boot, then I’d suspect a hardware problem.