I have the originals of OC09 and OC12 They fool HP. OC35 is for HP OS35 is for SONY.
Remember yer out of luck when the HP Warranty expires, however HP sells another year for 99.99! So far I have had ALL the screws for my machine and 2 flashed drives replaced and several free software replacents. A moron and a woman with thin fingers can replace the DVDRW drive but outside of copying ONE dual layer DVD, DVD-R still rules for the price. AS does DVD-RW 4.7.
At Best Buy HP only supplies DVD+R. Those Dual Layer blanks are freakin' expensive. I recommend going to Kmart and getting a DVD recorder by Cyberhome. They work with your computer well and many formats.
Also an UnFLASHED DVDRW in your computer reads better then one flashed a few times. I have no idea why. Also some things burned to a flashed DVD burner might not make it. I don't know why either.
Also the Dangerous Bros are back! http://forum.rpc1.org/dl_file.php?si...e=4080NC35.ZIP
For HP users RPC1 tho. But it cooks non dual layer GWA-4080N!