If computer does not
start normally, use this checklist to identify specific symptoms and
take the recommended corrective actions to resolve the problems.
Perform a Hard Reset Do these actions first to clear all temporary setting before troubleshooting the problem.
Disconnect
all peripheral devices and remove all USB devices and media cards
Disconnect
the AC power adapter,
remove
the battery, and then
press and hold
the power button for at least 15 seconds to drain residual charge
- Reconnect
the AC power adapter (do not connect the battery), press
the Power button and look
for the LEDs to blink or glow, and listen
for the sound of a disk drive and fan turning.
Perform each recommended corrective action and then attempt to restart the computer.Symptom 1: LED lights do not glow, display is black, no fan or drive sounds are heard, and computer does not startIf
LEDs do not glow or blink when AC power adapter is attached and power
button is pressed, there is no power available to the notebook.
- Check AC adapter wiring and power connection to the notebook.
- Connect a different AC power adapter and remove battery, then restart notebook.
- Connect a different battery and disconnect AC power adapter, then restart notebook.
- If there is no power available at the notebook, contact HP to purchase a replacement battery or AC adapter.
Symptom 2: LEDs blink or computer beeps but does not start Blinking LEDs or beep tones indicate a hardware failure during the pre-start up testing.
- Count number of blinking LEDs or beeping tones to help with diagnostics testing.
- Contact HP for technical assistance. There are no other user-initiated troubleshooting actions until error codes are resolved.
Symptom 3: LEDs glow, fan noise may be heard briefly, display remains black, and computer fails to startup or boot
Usually occurs if a component is installed incorrectly, or there is a device conflict or failure.
- Connect an external monitor to check if the problem is the built-in LCD display or graphics card.
- Remove all CD/DVDs, SD cards, USB devices, peripherals and do a Hard Reset
.
- If memory or hard drive components were replaced, reinstall original components.
- Remove memory modules and replace one-at-a-time.
- Remove and reseat hard drive.
- If possible, turn on power, press F10
to enter BIOS
mode, and run Memory Test
and Hard Drive Test
.
- On newer notebooks, turn on power, press Esc
to enter UEFI
mode, and run Memory Test
and Hard Drive Test
.
- If possible, turn on power, press F8
to enter Windows Advanced Boot Options
, and select Repair Computer
option, or enter Safe Mode
and run Memory Diagnostics
.
- If all other methods fail
, but computer can boot to BIOS, use recovery disk to recover the computer to original condition.
Note:
All programs and data are destroyed during recovery.
Symptom 4: Computer may display an error message on a black screen during startup or boot- Search
www.microsoft.com
for terms in error message.
- Search
www.hp.com
for terms in error message.
- If possible, turn on power, press F10
to enter BIOS
mode, do the corrective actions listed under Symptom 3
to run memory and hard drive tests.
Symptom 5: Computer displays a blue screen or continually re-starts
After an error message is displayed, you can usually bypass the error and continue to run the notebook in
Safe mode
to install an updated BIOS or driver.
- Search
www.microsoft.com
for terms in error message.
- Search
www.hp.com
for terms in error message.
- If possible, turn on power, press F10
to enter BIOS
mode, and run diagnostic Memory test
and Hard Drive test
.
- If possible, turn on power, press F8
to enter Windows Advanced Boot Options
, and do one or more of the following:
- Select Disable automatic restart on system failure
to view error message.
- Run Repair Your Computer
.
- Run Last Known Good Configuration
.
- Select Boot into Safe Mode
and then select Run a Microsoft system restore
.
- Select Boot into Safe Mode
and then select Uninstall recently installed programs
.
- Select Boot into Safe Mode
and then run Windows Update
.
Symptom 6: Computer displays the Windows logo screen and stops respondingIf no error message displays, turn on power, press
F8
to enter
Windows Advanced boot options
,and select
Disable auto-restart
to view error message.
- Search
www.microsoft.com
for terms in error message.
- Search
www.hp.com
for terms in error message.
- If possible, turn on power, press F10
to enter BIOS
mode, and select Restore the BIOS defaults (F9)
.
- If possible, turn on power, press F10
to enter BIOS
mode, and run Hard Drive Test
.
- If possible, turn on power, press F8
to enter Windows Advanced Boot Options
, and select Last Known Good Configuration (Advanced)
.
.
- If possible, turn on power, press F8
to enter Windows Advanced Boot Options
, and select Boot into Safe Mode
and then Uninstall recently installed programs
.
Update Computer After Resolving A Problem
When the computer starts into Windows normally, you should install the
latest updates and patches to prevent other start-up problems.
Pls. specify the error meaasge or code while startup.
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