HP Pavilion Dv9300 Entertainment Notebook Pc Series Service Guide
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Troubleshooting Maintenance and Service Guide 2–21 Flowchart 2.5—No Power, Part 4 Y N Continued from“Flowchart 2.4—No Power, Par t 3.” Reseat loose components and boards and replace damaged items. Open computer. Loose or damaged parts? Y Close computer and retest. Power on? Done N Replace the following items (if applicable). Check computer operation after each replacement: 1. Internal DC-DC converter* 2. Internal AC adapter 3. Processor board* 4. System board* *NOTE: Replace these items as a set to prevent shorting out among components.
2–22 Maintenance and Service Guide Troubleshooting Flowchart 2.6—No Video, Part 1 AN Stand-alone or docking device? No video. Replace the following one at a time. Test after each replacement. 1. Cable between computer and computer display (if applicable) 2. Display 3. System board Internal or external display*?Adjust brightness.Video OK? Done Docking Device Internal Stand-alone External Adjust brightness. Video OK? Done Y Press lid switch to ensure operation. Video OK? Done Y N Video OK? DoneDone N Check for bent pins on cable. Tr y another display.Internal and external video OK?Replace system board. YYN N *NOTE: To change from internal to external display, use the hotkey combination. Y Go to“Flowchart 2.7—No Video, Par t 2.”
Troubleshooting Maintenance and Service Guide 2–23 Flowchart 2.7—No Video, Part 2 Y N Continued from“Flowchart 2.6—No Video, Par t 1.” Done Adjust external monitor display.Video OK?Adjust display brightness. Video OK?Video OK? DoneDone Check that computer is properly seated in docking device, for bent pins on cable, and for monitor connection.Go to “A” in “Flowchart 2.6—No Video, Par t 1.” Check brightness of external monitor. Try another external monitor. Internal and external video OK? Go to “Flowchart 2.8—Nonfunctioning Docking Device (if applicable).” YY Y N N N Remove computer from docking device, if connected.
2–24 Maintenance and Service Guide Troubleshooting Flowchart 2.8—Nonfunctioning Docking Device (if applicable) Y N Reseat power cord in docking device and power outlet. N Check voltage setting on docking device. Reset monitor cable connector at docking device.Reinstall computer into docking device. Docking device operating? Docking device operating?DoneDone Y Nonfunctioning docking device. Remove computer, replace docking device. Test replacement docking device with new computer.
Troubleshooting Maintenance and Service Guide 2–25 Flowchart 2.9—No Operating System (OS) Loading No OS loading from hard drive, go to “Flowchart 2.10—No OS Loading, Hard Drive, Part 1.” Reseat power cord in docking device and power outlet. No OS loading.* *NOTE: Before beginning troubleshooting, always check cable connections, cable ends, and drives for bent or damaged pins. No OS loading from diskette drive, go to “Flowchart 2.13—No OS Loading, Diskette Drive.” No OS loading from optical drive, go to “Flowchart 2.14—No OS Loading, Optical Drive.” No OS loading from network, go to “Flowchart 2.20—No Network/Modem Connection.”
2–26 Maintenance and Service Guide Troubleshooting Flowchart 2.10—No OS Loading, Hard Drive, Par t 1 Go to“Flowchart 2.17—Nonfunctioning Device.” Y Done N OS not loading from hard drive. Nonsystem disk message?Go to “Flowchart 2.11—No OS Loading, Hard Drive, Part 2.” Reseat external hard drive. OS loading? Done Boot from CD? Go to “Flowchart 2.13—No OS Loading, Diskette Drive.” Boot from hard drive? Boot from diskette? Change boot priority through the Setup Utility and reboot. Boot from hard drive? Y Y Y YY N N N N N Check the Setup utility for correct booting order.
Troubleshooting Maintenance and Service Guide 2–27 Flowchart 2.11—No OS Loading, Hard Drive, Par t 2 Load OS using Operating System disc (if applicable). Continued from “Flowchart 2.10—No OS Loading, Hard Drive, Part 1.” Reseat hard drive. Done Disc or diskette in drive?1. Replace hard drive. 2. Replace system board. Go to “Flowchart 2.13—No OS Loading, Diskette Drive.”Format hard drive and bring to a bootable C:\ prompt. Create partition, and then format hard drive to bootable C:\ prompt. Boot from diskette drive? Remove disc or diskette and reboot. YN Boot from hard drive? Y N YN Hard drive accessible? YN Hard drive accessible?Done Run FDISK. Y N Hard drive partitioned? Hard drive formatted? YN YN Computer booted? Done Y N Go to“Flowchart 2.12—No OS Loading, Hard Drive, Part 3.”Go to“Flowchart 2.12—No OS Loading, Hard Drive, Part 3.”
2–28 Maintenance and Service Guide Troubleshooting Flowchart 2.12—No OS Loading, Hard Drive, Par t 3 Y System files on hard drive? Continued from “Flowchart 2.11—No OS Loading, Hard Drive, Part 2.” Clean virus. Done N Install OS and reboot. Virus on hard drive?OS loading from hard drive? Y NY N Y N Diagnostics on disc or diskette?Replace hard drive. Run diagnostics and follow recommendations. Run SCANDISK and check for bad sectors. Can bad sectors be fixed?Replace hard drive. YN YN Fix bad sectors.Boot from hard drive?Replace hard drive. Done
Troubleshooting Maintenance and Service Guide 2–29 Flowchart 2.13—No OS Loading, Diskette Drive Replace the following components individually, retesting after each replacement: ■Diskette drive■System board Done Y N Reseat diskette drive. OS not loading from diskette drive. Done Y YY Y Y Y Y N N N N N NN OS loading? Nonsystem disk message?Bootable diskette in drive?Install bootable diskette and reboot computer. Check diskette for system files. Try different diskette. Nonsystem disk error? OS loading? Boot from another device? Enable drive and cold boot computer. Is diskette drive boot order correct? Change boot priority using the Setup Utility.Go to “Flowchart 2.17—Nonfunc- tioning Device.” Diskette drive enabled in the Setup utility? Go to “Flowchart 2.17—Nonfunctioning Device.” Reset the computer. Refer to Section 1.2, “Resetting the Computer,” for instructions.
2–30 Maintenance and Service Guide Troubleshooting Flowchart 2.14—No OS Loading, Optical Drive Y Done N Bootable disc in drive? Disc in drive? No OS loading from CD-ROM or DVD-ROM drive.Install bootable disc and reboot computer. Go to “Flowchart 2.17—Nonfunctioning Device.” Go to“Flowchart 2.17—Nonfunctioning Device.” Install bootable disc. Boots from CD or DVD? Boots from CD or DVD?Try another bootable disc. Booting from another device? Booting order correct? Correct boot order using the Setup Utility.Done Reseat drive. Y Y Y YY N NN NN Reset the computer. Refer to Section 1.2, “Resetting the Computer,” for instructions.