If you can’t isolate the cause of a problem using the diagnostic tools, you can use the suggestions in the following table to help find the problem. Table 3-2. Troubleshooting Suggestions HP OmniBook 7100 Troubleshooting and Diagnostics 3-5 Symptom Call Center: Repair Center: Repair Center: Suggestions Likely Causes Comments To help determine likely causes, check to see what replaceable modules are involved in the system function and what roles they play. See the table on page 1-13. Startup Does not boot on ac or battery Check the power source. Push system-off button. Unplug the ac adapter and remove all batteries, then reconnect power. Remove any RAM boards and try again.
Reinsert and try again. AC adapter. DC-DC PCA. RAM board. CPU module. Motherboard. Video PCA. LCD module. Hard drive. Check ac adapter. Remove any RAM boards and retry. If status panel does not turn on, reprogram BIOS, replace DC-DC PCA, replace motherboard. If status panel turns on but display remains off, try external monitor. If monitor shows successful boot, replace LCD module. If monitor shows activity but BIOS does not complete, replace CPU module. If monitor is blank, replace video PCA, replace CPU module, replace motherboard. If status panel and display turn on, BIOS completes, but OS does not start from hard disk or from floppy drive, replace CPU module, then motherboard.
If OS starts from floppy drive, reload hard drive, replace hard drive. Does not boot on battery (boots on ac) Check battery level on status panel and battery LEDs. Check battery contacts. If available, try another battery. Battery or contacts. DC-DC PCA. Motherboard. Does not boot from floppy drive Check floppy drive contacts. Check boot order in BIOS Setup. Check that floppy boot is enabled in BIOS Setup. Floppy drive or contacts. Motherboard. Error message such as “Invalid system disk” or “Auto IDE error” Check for a disk in floppy drive. Remove and reinsert hard drive. Check boot order in BIOS Setup. Hard drive contacts. Hard drive.
If unit boots from floppy drive, check for corrupt files on hard drive, reload hard drive, replace hard drive. Sluggish startup or shutdown Run ScanDisk and Disk Defragmenter to check and optimize the hard drive. Delete temporary and unneeded files. Use same suggestions shown at left.