User manual COMPAQ PRESARIO DESKTOP UPGRADING AND SERVICING GUIDE

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Removing the Side Panel 1 Remove the side panel by loosening the screw (D) that secures the panel to the PC chassis. 2 Ensure that the hole for the thumbscrew aligns with the hole in the chassis, and replace the thumbscrew (D). Removing the Front Panel This procedure is necessary only when removing or replacing an optical drive, memory card reader, diskette drive or the hard disk drive. 1 Press and hold down the square button (1) near the top front of the inside of the chassis. Press one tab (2), and then press the other tab (3), toward the outside edge of the chassis. 2 Slide the panel back about 1 inch (2. 5 cm), and then lift it off the unit. WARNING: Beware of sharp edges inside the chassis. 2 Remove the front panel. 2 Upgrading and Servicing Guide Replacing the Front Panel 1 Align the top of the front panel with the top of the chassis front. 2 Press the panel onto the chassis at the top and at each side near the bottom until the panel snaps into place. Removing and Replacing Drives Your PC has several drives that you can replace or upgrade. See the preceding topic, "Locating Components Inside the PC" for drive type and location. The hard disk drive is either a Serial ATA (advanced technology attachment) drive that uses a narrow data cable, or a Parallel ATA drive that uses a wide data cable. CAUTION: Back up your personal files on the hard disk drive to an external storage device, such as a CD, before removing the hard disk drive. After replacing the hard disk drive, you need to run System Recovery, using the recovery discs, to load the factory-installed files. See the user documentation that came with your PC for details about the recovery procedure. Locating Components Inside the PC You can add an optical drive into an empty lower optical drive bay. IMPORTANT: Before adding a new optical drive, make sure that it is compatible with the Microsoft® Windows® XP operating system. Also, make sure you have the correct software and drivers for the optical drive to work with the operating system. Removing a Drive A Upper optical drive bay, may be a CD-ROM, CD-RW, DVD-ROM, DVD+RW/+R or combination drive B Lower optical drive bay, may be empty (blank plate) or a CD-ROM, CD-RW, DVD-ROM, DVD+RW/+R or combination drive C Memory card reader (select models) D Diskette (floppy) drive (select models) E Front connector panel (no replacement instructions) F Hard disk drive 1 Complete the procedures to prepare the PC, to remove the side panel, and to remove the front panel. See "Opening and Closing the PC" on page 1. Upgrading and Servicing Guide 3 2 Locate the drive you want to remove. Disconnecting the Memory Card Reader Drive Cable 3 Release the drive from the chassis by lifting the tab (1) on the latch drive bracket, and then sliding (2) the drive partway out of the bay. (The latch drive bracket secures the drives in their respective positions in the chassis. ) 4 Disconnect the power cable and data cable from the back of the drive you want to remove, as indicated in the following illustrations: · For optical drives, disconnect the power cable (P) and the data cable (D) from the back of the drive you want to remove. · For most drive cables, use a gentle rocking motion to free the plug. For Serial ATA hard disk drive cables, press the latch (1) (select models only) in the center of each plug and pull the plug (2) from the drive connector. Disconnecting the Diskette (Floppy) Drive Cables Disconnecting the Serial ATA Hard Disk Drive Cables Disconnecting the Optical Drive Cables Disconnecting the Parallel ATA Hard Disk Drive Cables 4 Upgrading and Servicing Guide 5 Pull the drive out of the drive bay. 6 If you are replacing the old drive with a new drive, remove the four guide screws (two on each side) from the old drive. You need these screws to install the new drive. 5 Slide the drive partway into the drive bay, making sure to align the guide screws with the guide slots. Replacing or Adding a Drive 1 If necessary, remove the existing drive. 2 If you are adding a drive to an empty lower optical drive bay, you must remove the blank plate from the bay. To do so, insert a flat screwdriver into the blank plate slot (C) and rotate the screwdriver to break the blank plate out of the chassis. Discard the blank plate. 6 Reconnect the power and data cables to your drive, as indicated in the following illustrations. If it is present, reconnect the sound cable. 3 Make sure the jumper on the new optical drive or new Parallel ATA hard disk drive is in the CS (Cable Select) position. The Serial ATA hard disk drive does not use cable select. Connecting the Optical Drive Cables NOTE: An optical drive may include a sound cable. Connect this cable also. Cable Select Jumper 4 Install four guide screws on the sides of the new drive (two on each side). [. . . ] 4 Complete the procedures to replace the side panel, and close the PC. See "Opening and Closing the PC" on page 1. NOTE: If the new card or device isn't working, read through the card manufacturer's installation instructions, and recheck all connections, including those to the card, power supply, keyboard and monitor. 8 Upgrading and Servicing Guide Replacing the Battery A lithium battery on the motherboard provides backup power for the PC's timekeeping capability. When the battery starts to weaken, the date and time may be incorrect. If the battery fails, replace it with a CR2032 lithium battery (3 volt, 220mAH rating) or an equivalent battery. WARNING: There is danger of explosion if the battery is incorrectly replaced. [. . . ]