I just bought recently this dvd-rw burner. Upon installation, I switched it to slave since there's an existing cd rom, and the pc recognized it and even reads cd. But when I tried to burn dvd with Nero, it won't complete its burning process, it will stop on 30% of burning data and then a message will appear; "Unable to at 12x" I tried to change the speed to no avail. Same thing happen when I used the burn4free...Is someone know how to fix this fault? I've been searching the web, but I can't find the solution. I will appreciate any help. Thank you.

I'm assuming this is on a desktop computer. If it is a typical new or fairly recent DVD combo drive (burns and reads both DVDs and CDs), it is capable of burning 16X or greater DVD +R or DVD -R disks, and if it is, it is capable of running at up to a UDMA 66 speed (UDMA 4 in Device Manager). If it is IDE connected, it must be connected to an 80 wire data cable in order to be able to reach it's faster speeds. It won't work properly connected to a 40 wire data cable. If that ain't it...... - all optical drives are somewhat sensitive as to which media - brands and types of burnable CDs or DVDs - you can use in them successfully - Pioneer drives have a history of being more picky about that than most drives. There are often lists of which media works properly in the drive model on the manufacturer's site in the info for the model, sometimes there are reviews on the web in which they test various media on your model, and sometimes the maker of the media has lists of which of their media works in which particular models properly. - the media you use must be rated capable of the speed at which you are trying to burn - particularly if you are using bulk CDs that come in a stack without the cases, there are often a greater percentage of those that are defective. Whenever you burn use the test-before-you-burn feature of the burning software to weed out the defective disks - it's often not turned on by default. .... If you are using an IDE connected drive... It is common to un-intentionally damage IDE data cables, especially while removing them - the 80 wire ones are more likely to be damaged. What usually happens is the cable is ripped at either edge and the wires there are either damaged or severed, often right at a connector or under it's cable clamp there, where it's hard to see - if a wire is severed but it's ends are touching, the connection is intermittant, rather than being reliable. Another common thing is for the data cable to be separated from the connector contacts a bit after you have removed a cable - there should be no gap between the data cable and the connector - if there is press the cable against the connector to eliminate the gap. 80 wire data cables are also easily damaged at either edge if the cable is sharply creased at a fold in the cable. Try another data cable if in doubt. ....... If the drive is SATA connected, it's common to damage or break off the projection on one side of the outside of the connector on the cable that "latches" it into the socket on the drive or the mboard. Make sure the SATA data cable connectors on the end of the cable "latch" into the socket on both ends - it should not move when you merely brush your hand against the cable near the socket - if it does, tape it in place, or use another data cable that does latch. ..... If you have not loaded the main chipset drivers, your drive controllers are likely to not be detected properly in 2000 or XP, and if they aren't, it is very common for optical drives connected to them to then not be detected properly, and if so they can't run at their maximum speeds, and burners may not even be detected by the burning software as burner drives. Whenever you load Windows from a regular Windows CD (or DVD) from scratch, after Setup is finished you must load the drivers for the mboard, particularly the main chipset drivers, in order for Windows to have the proper drivers for and information about your mboard hardware, including it's AGP or PCI-E, ACPI, and hard drive controller support. If you have a generic system and have the CD that came with the mboard, all the necessary drivers are on it. If you load drivers from the web, brand name system builders and mboard makers often DO NOT have the main chipset drivers listed in the downloads for your model - in that case you must go to the maker of the main chipset's web site, get the drivers, and load them.

I also saw "Power Calibration Error", what does it means?

Check all the stuff in response 1, and if something applies, fix it, if applicable. If you still get the error after that, it appears it's a message generated by the burning software. Search with the exact message: "Power Calibration Error" with the quotes to find possible causes. E.g. it is most often caused by you using the wrong media. http://www.megaleecher.net/Fix_Powe...