HP G50-215CA HP G50 Notebook PC and Compaq Presario CQ50 Notebook PC - Mainten - Page 54
RTC battery, Remove the hard drive cover see
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RTC battery NOTE: 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 486624-001 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 40). 5. Remove the hard drive cover (see Hard drive on page 43). Remove the RTC battery: 1. Disconnect the RTC battery cable (1) from the system board. 2. Remove the RTC battery (2) from the clip built into the base enclosure. Reverse this procedure to install the RTC battery. 46 Chapter 4 Removal and replacement procedures