Table 7-20 Issues, possible causes, and xes
Items Procedures
Symptoms
● Has power, light activity, fan spinning
● HP Logo displays briey
● Attempt to boot to operating system and
freeze/hang at Windows logo
● No response to pressing num lk or caps
lock key
Possible causes
Conict of instructions from multiple programs or drivers; installing a new hardware or
program that is not compatible (may also cause a blue screen error—see blue screen
issue).
Troubleshooting steps
Perform the following steps one at a time to verify normal boot process:
1. Disconnect all external peripherals, and perform a hard reset (8. Hard reset
on page 115).
2. Perform soft reset (9. Soft reset (Default Settings) on page 116).
3. Update BIOS and drivers (4. Update BIOS and drivers on page 107).
a. Roll back to previous version may be necessary.
b. Go to safe mode to install drivers.
4. Run Hardware Diagnostics (6. HP Hardware Diagnostics and Tools on page 109)
to isolate hardware issue.
5. Undo recent changes in Windows (5. Remove or uninstall recently added
hardware, software on page 108).
6. Reseat cables and connections (10. Reseat cables and connections
on page 116).
7. Start Windows in safe mode (11. Test with minimum conguration on page 118).
8. Use Startup Repair Windows to x Windows damaged les.
9. Test with essential hardware conguration (11. Test with minimum
conguration on page 118) with a veried working operating system (for
instance, USB Windows-To-Go), if available, to isolate the software issue.
Tips For more information, see http://support.hp.com/us-en/document/c03671001.
Electromagnetic Interference (EMI)
Use this information to troubleshoot EMI issues.
ENWW Common issues and possible solutions 137
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