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Question posted by abejumel on April 26th, 2014

Asus X55a Laptop Windows Cannot Boot

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Answer #1: Posted by freginold on May 15th, 2014 3:40 AM
This answer was accepted by the poster of the original question.
freginold

Member since:
December 20th, 2011

Points: 23,253,885
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Usually when a laptop won't power on, it's because of one of three things: the battery, the battery charger/AC adapter, or the motherboard (or power board, if the laptop has a separate power board that connects to the motherboard).

You can rule out the battery easily by attaching the AC adapter and trying to turn the laptop on. If your AC adapter has an LED on it, you can often tell if the adapter isn't working because the LED won't light up. (However, just because the LED does come on doesn't mean the adapter is working as it should.)

The motherboard is the most expensive option to replace, so a good rule of thumb is to get a new AC adapter/charger and see if the laptop powers up with that. If it still won't power on, you may have a bad motherboard, in which case it might be cheaper to get a new laptop than have the motherboard repaired or replaced. If you can determine that it's the power board rather than the motherboard, replacing that board might be a more attractive option than replacing the whole computer.

Answer #2: Posted by freginold on May 15th, 2014 3:59 AM
freginold

Member since:
December 20th, 2011

Points: 23,253,885
100
points
Usually when a laptop won't power on, it's because of one of three things: the battery, the battery charger/AC adapter, or the motherboard (or power board, if the laptop has a separate power board that connects to the motherboard).

You can rule out the battery easily by attaching the AC adapter and trying to turn the laptop on. If your AC adapter has an LED on it, you can often tell if the adapter isn't working because the LED won't light up. (However, just because the LED does come on doesn't mean the adapter is working as it should.)

The motherboard is the most expensive option to replace, so a good rule of thumb is to get a new AC adapter/charger and see if the laptop powers up with that. If it still won't power on, you may have a bad motherboard, in which case it might be cheaper to get a new laptop than have the motherboard repaired or replaced. If you can determine that it's the power board rather than the motherboard, replacing that board might be a more attractive option than replacing the whole computer.

Related Asus X55A Manual Pages

User's Manual for English Edition - Page 2

... 34 Power Management Modes 36 Sleep and Hibernate 36 Thermal Power Control 38 Special Keyboard Functions 39 Colored Hot Keys (on selected models 39 Microsoft Windows Keys 42 Multimedia Control Keys 43 Switches and Status Indicators 44 Switches ...44 Status Indicators 45  Notebook PC User Manual
User's Manual for English Edition - Page 3

... 54 Flash Memory Card Reader 58 Hard Disk Drive 59 Memory (RAM 62 Connections...63 Network Connection 63 Wireless LAN Connection (on selected models 65 Windows Wireless Network Connection 67 Bluetooth Wireless Connection(on selected models 69 USB Charger+...72 Appendix Optional Accessories A-2 Optional Connections A-2 Operating System and Software A-3 System BIOS...
User's Manual for English Edition - Page 4

... Notice A-35 CTR 21 Approval(for Notebook PC with built-in Modem A-36 European Union Eco-label A-38 Global Environmental Regulation Compliance and Declaration A-39 ASUS Recycling/Takeback Services A-39 Copyright Information A-40 Limitation of Liability A-41 Service and Support A-41  Notebook PC User Manual
User's Manual for English Edition - Page 15

Two Windows function keys are provided to help ease navigation in use plain water if necessary) to turn ON and once to clean the display panel. 5 Power ... excellent viewing like that of desktop monitors. Unlike desktop monitors, the LCD panel does not produce any radiation or flickering, so it is in the Windows operating system.
User's Manual for English Edition - Page 16

... a pointing device that provides the same functions as a desktop mouse.A softwarecontrolled scrolling function is available after setting up the included touchpad utility to allow easy Windows or web navigation.
User's Manual for English Edition - Page 19

... button for opening the tray. You can also eject the optical drive tray through any software player or by right clicking the optical drive in Windows "Computer" and selecting Eject. 3 Optical Drive Emergency Eject (location varies by model) The emergency eject is used to be removed from a fixed object.Some may...
User's Manual for English Edition - Page 30

...you to enter the BIOS Setup. IMPORTANT! WARNING! In most cases the record should be presented with a boot menu with any materials that will reduce air circulation such as a permanent part of the Notebook PC's ...tests called the Power-On Self Test (POST).The software that the hard disk is used to boot from your Notebook PC before turning it ON. DO NOT carry or cover a Notebook PC that...
User's Manual for English Edition - Page 31

...given during bootup, backup your Notebook PC in data loss. To run Windows disk checking program. sectors" for servicing. Self Monitoring and Reporting Technology The... after running a software disk checking utility, you should take your data immediately and run Window's disk checking program: click Windows > select Computer > right-click a hard disk drive icon > choose Properties > click...
User's Manual for English Edition - Page 32

.... STR is available due to complete battery depletion or no power supply (e.g. Checking Battery Power The battery system implements the Smart Battery standard under the Windows environment, which allows the battery to accurately report the amount of working power. A fully-charged battery pack provides the Notebook PC a few hours of charge...
User's Manual for English Edition - Page 34

To protect the hard drive, wait at least 5 seconds after turning OFF your operating system, you may be customized in Windows Control Panel "Power Options." For other options, such as "Switch User, Restart, Sleep, or Shut Down," click the arrowhead next to allow restart.To restart ...
User's Manual for English Edition - Page 36

... (such as a document scrolled down half way or email typed half way) will close all applications and ask if you can be found in the Windows > Control Panel > Hardware and Sound > Power Options. In Power Options, you want to save your work , your Notebook PC is not in the BIOS Setup...
User's Manual for English Edition - Page 37

Because RAM is volatile, it requires power to Sleep. Click the Windows button and the arrowhead next to the lock icon to see this option. By doing this ... the power button. (NOTE: The power indicator will blink in RAM while many components are turned OFF. Click the Windows button and the arrowhead next to the lock icon to see this mode.) Notebook PC User Manual 37 Recover by pressing...
User's Manual for English Edition - Page 39

... using low resolution modes.) Notebook PC User Manual 39 stretches the screen area to -Disk depending on selected models) ON or OFF with a colored command. Windows software settings are necessary to use the wireless LAN or Bluetooth. Sun Down Icon (F5): Decreases the display brightness Sun Up Icon (F6): Increases the...
User's Manual for English Edition - Page 40

... Colors, select High Color in Display Property Settings.) NOTE: Must connect an external monitor "before" booting up. Allows you to use a larger portion of the keyboard for cell navigation. (on selected models): Toggles the built-in Windows OS) Num Lk (Ins): Toggles the numeric keypad (number lock) ON and OFF. Allows you...
User's Manual for English Edition - Page 41

Fn+A (on -screen display (OSD). Fn+Enter (extended keyboard): Toggles Windows "Calculator" application. (on selected models): Toggles "Life Frame" software application. Fn+V (on selected models) Notebook PC User Manual 41 Applying or removing the power adapter ...
User's Manual for English Edition - Page 85

...viruses. 4. Reinstall the latest version "Power4 Gear" utility to protect yourself from the ASUS website. A. These utilities and BIOS files can be downloaded from viruses. Ensure your ...-install them in DOS mode. ASUS bundled software When I power ON the Notebook PC, there will be compatible with Easy Flash in Windows or AFLASH in Windows Safe Mode. 3. Unknown Reason...
User's Manual for English Edition - Page 87

...American Megatrends, Inc. �M���a��i�n� Advanced Chipset Boot Security Save & Exit POST Logo Type Start Easy Flash Play POST Sound Speaker Volume Internal Pointing Device Wake ... the Notebook PC's exact model and download the latest BIOS file for your model from the ASUS website and save it in battery mode [Static] [No] [4] [Enabled] [Enabled] [...
User's Manual for English Edition - Page 88

DO NOT delete the partition named RECOVERY. Recover Windows to select Windows Setup [EMS Enabled]. 3. Press [F9] during bootup. 2. Read the ASUS Preload Wizard messages and click Next. 5. This option deletes all partitions from your hard disk drive and creates a new system partition as drive"C". Press [Enter] ...
User's Manual for English Edition - Page 89

...the AI Recovery Burner icon on selected models) Creating the Recovery DVD: 1. According to complete the recovery process. Recover Windows to start creating the Recovery DVD. 3. Insert a blank writable DVD into the optical drive and click Start to entire... disk drive or formatting the incorrect drive partition. Visit the ASUS website at www.asus.com for updated drivers and utilities.
User's Manual for English Edition - Page 90

... to do so, during the recovery process or else your hard drive. Visit the ASUS website at www.asus.com for updated drivers and utilities. Using the Recovery D��V�D��:...User Manual Unstable power supply may be unusable. Ensure to connect the power adapter to boot from the Recovery DVD. 3. Insert the Recovery DVD into the optical drive.Your Notebook ...

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