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HP Compaq dc7800 Ultra-slim Desktop PC - Removing and Replacing the Hard drive

This document pertains only to HP Compaq dc7800 Ultra-slim Desktop PCs with the following case design:

Before you begin

  • You need a Torx-15 screwdriver.

  • Turn off the computer, and then disconnect all cables. Disconnect the Ethernet or modem cable before disconnecting the power cord.

  • Move the computer to a clear, flat, stable work surface over a non-carpeted floor.

  • HP strongly recommends the use of an anti-static wrist strap and a conductive foam pad when working on the computer.

  • Do not remove a component from its protective packaging until you are ready to install it.

WARNING: The edges of metal panels can cut skin. Be careful not to slide skin along any interior metal edge of the computer.
CAUTION: This product contains components that can be damaged by electrostatic discharge (ESD). To reduce the chance of ESD damage, work over a noncarpeted floor, use a static dissipative work surface (such as a conductive foam pad), and wear an ESD wrist strap connected to a grounded surface.

Video overview (in English)

To view a video demonstrating the procedure for removing the hard drive, right-click Hard drive removal video and select Open link in new window/tab.

Replacement part information

The following HP part numbers are known to be compatible with this system:

NOTE: Part numbers are subject to change.
Description
Part Number
Requires Return
80 GB SATA 1.5 Gb/s Ultra ATA/100 hard drive - 5,400 RPM, 2.5 inches form factor, 9.5 mm thick
449981-001 (Modified)
Yes
80 GB SATA 1.5 Gb/s Ultra ATA/100 hard drive - 7,200 RPM, 2.5 inches form factor, 9.5 mm thick
456573-001 (Modified)
Yes
160 GB SATA 1.5 Gb/s Ultra ATA/100 hard drive - 7,200 RPM, 2.5 inches form factor, 9.5 mm thick
456574-001 (Modified)
Yes

* If a part is listed as "Yes" under "Requires Return" then the defective part needs to be returned to HP. For more information about returning parts to HP select one of the links below:

Defective parts return procedure for US .

Defective parts return procedure for Europe .

NOTE: For customers in countries/regions with RoHS legislation* (e.g. EU, China, etc.) restricting the use of hazardous substances in electrical equipment. The use of the Original Spare part is regulated by RoHS legislation. If your unit contains a part that is labelled with the Modified Spare number, the Modified Spare must be ordered as the replacement part. If your unit contains a part that is labelled with the Original Spare number, please order the Original Spare as the replacement part. In this case either the Original Spare or the Modified Spare may be shipped which will not affect performance or functionality of the unit.

Hard drive removal

CAUTION: Review the following safety considerations before performing the following steps. Failure to comply with these safety considerations could result in damage to the product.
Step 1
With all cables disconnected from the computer, remove the access panel.
Step 2
Remove the optical drive.
Step 3
Press the release latch on the hard drive bracket handle.
Step 4
Rotate the handle up to disengage the drive from the connector on the system board.
Step 5
Pull the hard drive bracket and drive up and out of the drive bay.
Step 6
Remove the Torx-15 retaining screw that secures the hard drive at the front of the bracket.
Step 7
Slide the hard drive out of the bracket and remove.
NOTE: If the replacement drive does not include guide screws, remove and reuse the screws from this drive.

Hard drive replacement

Step 1
Slide the hard drive into the hard drive bracket.
Step 2
Replace the Torx-15 retaining screw that secures the hard drive at the front of the bracket.
Step 3
Align the four guide screws on the drive with the guide slots in the drive bay.
Step 4
Lower the drive. Make sure the two guide pins on the sides of the handle are in their slots.
Step 5
Push the drive bracket handle down to slide the drive into the connector until it is firmly seated and the release latch clicks into place.
Step 6
Replace the optical drive.
Step 7
Replace the access panel.

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