1) Computer off, computer unplugged from power, open the computer case,http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01176770&tmp_task=useCategory&cc=us&dlc=en&lc=en&product=3771771
FOLLOW Anti-Static Precautions:
2) Anti-Static Precautions:
Your body carries Static electricity. Static WILL fry out (Short Circuit) the delicate hardware components inside a computer.
Computer on a table, computer unplugged from power, computer case open.
TOUCH an unpainted surface, of the metal frame of the open computer case.
This action will relieve your body of Static.
Should you leave your computer in the middle of working on it, be SURE to Touch the metal frame again upon your return.
3) Remove the Front Cover,http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01176823&tmp_task=useCategory&cc=us&dlc=en&lc=en&product=3771771
4) Removing and replacing a CD/DVD drive,http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01176843&tmp_task=useCategory&cc=us&dlc=en&lc=en&product=3771771
The HP Pavilion Elite M9300t Desktop PC, is supposed to come with a SATA type of DVD R/W optical drive, and a SATA type of DVD drive, (Unless you have Bluetooth types of optical drives, of course),http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01492741&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=3771771
This means they use a SATA power cable,http://www.playtool.com/pages/psuconnectors/connectors.html#sata
Note the L-shaped opening. Lines up with the L-shape on the optical drive power connector.
Note that there may be a small lock tab on top, that you depress on the SATA power cable's connector, in order to remove it from the optical drive.
(Some SATA cable connectors have it, some do not. Referring to power cable, and data cable)
The SATA power cable has 15 contact pins. Between it, and the SATA data cable, it has the longer connector.
This is a general example of a SATA data cable's connector.
7 contact pins,http://en.wikipedia.org/wiki/File:SATA_ports.jpg
Here you can see the L-shaped opening more clearly.
When you are finished make SURE all cables are connected in tightly, on the inside of the computer. Sometimes when replacing hardware they get bumped loose.
Also make sure the Ram Memory module/s ('Stick'), are plugged in tightly. They also get bumped. Doesn't hurt to push down on them/it in the ram memory slot. Also make sure the Locks on each end of the Ram Memory module is locked in towards the Ram Memory module.
When the Locks are engaged, the Ram Memory module is properly seated.
For additional questions please post in a Comment.
Have questions about anything in the HP links, post in a Comment.