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    Information regarding recent vulnerabilities

    HP is aware of the recent vulnerabilities commonly referred to as "Spectre" and "Meltdown". HP has published a security bulletin with patches for these issues and a list of impacted systems. We will continue to update the bulletin as more information becomes available and encourage customers to check the bulletin frequently.

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HP Compaq dc5850 Microtower PC - Removing and Replacing the Access Panel

Introduction
This document is provided to assist in removing and replacing the Access Panel for the HP Compaq dc5850 Microtower PC.
Minimum skill level
The End User requires no hardware-specific training to replace the defective part. The End user should have familiarity with system hardware and software requiring repair.
Tools required
Torx #15 (T15) screwdriver
Parts required
  note:
Part numbers are subject to change.
The replacement part number will vary depending on the Access Panel that is being replaced. If a part is listed as 'Yes' under 'Requires Return' then the defective part needs to be returned to HP. Click here for more information on returning parts to HP.
Description
Part Number
Requires Return
Access panel
461859-001
No
  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 labeled with the Modified Spare number, the Modified Spare must be ordered as the replacement part. If your unit contains a part that is labeled 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.
Summary of instructions
To view a video demonstrating the procedure for removing the Access Panel, click on the link below. Or use the product video listing on the HP Services Media Library, then select Access Panel from the menu on the upper left hand side of the screen.
Click here to view the Access Panel removal video (right-click on the link to open in a new window/tab).
Access Panel removal
  1. Review the safety considerations before performing the steps listed below by clicking on the following link:
      caution:
    Failure to comply with the precautions could result in damage to your product or loss of data.
  2. Remove the cable lock and/or padlock, if they are installed.
  3. Loosen the captive Torx-15 screw that secures the access panel.
  4. Slide the front of the access panel back until it stops.
  5. Lift the access panel away from the chassis.
Access Panel replacement
  1. Place the access panel on the chassis so the tabs in the panel align with the slots in the chassis guide rails.
  2. Make sure the slot in the back of the access panel is aligned with the padlock grommet.
  3. Slide the access panel forward until it is flush with the front bezel.
  4. Tighten the screw.

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