This document pertains to HP Notebook computers.
A hard or forced reset erases all information in the computer's memory which may restore functionality. Resetting your computer forces the system to clear and reestablish the software connections between the BIOS and the hardware.
Performing a hard or forced reset may fix the following conditions:
- Windows stops responding
- Computer stops before Windows loads (no boot, blinking cursor on a black display, or errors relating to OS not found or missing drive)
- Display suddenly goes blank and stays blank
- Software freezes
- Keyboard stops responding
- The computer does not return from sleep or suspend mode
- An external device stops responding (turn off power to the device in addition to performing the steps in this document)
When performing a hard reset, you must disconnect or remove all peripheral devices. You should start and test the computer by itself, and then reconnect one peripheral device at a time. To resolve the start up or operational problem, you should run the HP Support Assistant, or manually install all updated drivers from Microsoft and HP.
To perform a hard reset, use the following steps:
- Turn off the computer.
- Remove the computer from any port replicator or docking station.
- Disconnect all external connected devices: USB storage devices, external displays, printers, etc.
- Unplug the AC adapter from the notebook computer.
- Remove the battery from the battery compartment.NOTE: If your computer has a sealed non-removable battery, these steps will not work. Instead, refer to Use a Forced Reset to Resolve Hardware and Software Issues on Notebook with a Sealed Non-Removable Battery .
- Press and hold down the Power button for about 15 seconds to drain any residual electrical charge from the capacitors that protect the memory.
- Insert the battery and plug the AC adapter back into the notebook computer; but do not connect any of the peripheral devices.
- Press the Power button to turn on the computer.
- If a startup menu opens, use the arrow keys to select Start Windows Normally , and then press the enter key.
- After reconnecting each of the peripheral devices, run Windows Update and HP Support Assistant to update all device drivers.