HP Envy 15-1155 Supplementary Manual

HP Notebook PCs - Resolving Start Up and No
Boot Problems Checklist
Print and use this checklist as a guide when trying to resolve problems when computer does
not startup or boot properly.
Perform a Hard Reset
1. Disconnect all peripheral devices and remove all USB devices and media cards.
2. Disconnect the AC power adapter, remove the battery, and then press and hold
the power button for at least 15 seconds.
3. 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.
If computer does not start normally, identify the specific problem symptom listed below and
take the recommended actions.
Symptom: LED lights do not glow, display is black, computer
does not start
If LEDs do not glow when 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.
Connect a different battery and disconnect AC power adapter.
If there is no battery or AC power at the notebook, contact HP for technical
assistance.
Symptom: LEDs blink or computer beeps but does not start
Count number of blinking LEDs or beeping tones to help with diagnostics testing
Contact HP for technical assistance
Symptom: LEDs glow, but computer fails to startup or boot,
and displays a black screen
Usually occurs if a component is installed incorrectly, or there is a device conflict or failure.
Connect an external monitor to check display
Remove all CD/DVDs, SD cards, USB devices, peripherals and do hard reset
If memory or hard drive components were replaced, reinstall original components
Remove memory modules and replace one-at-a-time
If possible, boot to BIOS mode (f10) and run Memory Test and Hard Drive Test
If all other methods fail, use recovery disk to recover the computer to original
condition.