HP HDX18-1020US HP HDX 18 Entertainment PC - Maintenance and Service Guide - Page 47
RTC battery, unplugging the AC adapter from the computer.
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RTC battery ✎ Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords and CMOS settings to be cleared. Description RTC battery Spare part number 449729-001 Before removing the RTC battery, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-8). 5. Remove the hard drive cover (see "Hard drive" on page 4-11). Remove the RTC battery: » Lift the RTC battery from the socket. Reverse this procedure to install the RTC battery. Removal and replacement procedures 4-14
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