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Acer Extensa 5420 Support Question

Acer Extensa 5420 Support Question

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Question posted by Mocoun on July 5th, 2014

Extensa 5420 Won't Boot Up

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Answer #1: Posted by freginold on August 21st, 2014 3:14 AM
This answer was accepted by the poster of the original question.
freginold

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When a laptop won't power on, it's often because of one of four things: the battery, the battery charger/AC adapter, the power board/battery charging board (if the laptop has one), or the motherboard.

You can attempt to rule out the battery by attaching the AC adapter and trying to turn the laptop on. If the laptop turns on when on AC power but won't turn on with the battery, then one of two things is happening: either the battery is bad, or the charger is bad and the battery has run down. If the laptop won't turn on with or without the AC adapter plugged in, then the battery is not the problem. 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.)

If it doesn't seem to be either the charger/adapter or the battery, then you're probably looking at either the power board or motherboard. If you are comfortable taking the laptop apart, you might want to try replacing the power board, which is the board that the charger plugs into. Amazon.com sells power boards (also sometimes called power jack boards) for many laptops for between $15 and $30.

The motherboard is a more expensive option to replace, so a good rule of thumb is to try the less expensive parts first. 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.

Related Acer Extensa 5420 Manual Pages

User Manual - Page 2

Extensa 5420/5120 Series User's Guide Original Issue: 05/2007 Changes may be reproduced, stored in a retrieval .... Record the model number, serial number, purchase date and place of purchase information in new editions of Acer Incorporated. Extensa 5420/5120 Series Notebook PC Model number Serial number Date of purchase Place of such revisions or changes. Acer Incorporated. Such ...
User Manual - Page 7

... for purchase options. Consult a physician or the manufacturer of the device are not limited to the network. These devices may contain small parts. Consult your laptop under the following conditions.
User Manual - Page 18

... Fast Infrared (FIR) 56 Universal Serial Bus (USB) 57 IEEE 1394 port 57 PC Card slot 58 ExpressCard 59 Installing memory 60 BIOS utility 60 Boot sequence 60 Enable disk-to-disk recovery 61 Password 61 Using software 61 Playing DVD movies 61 Acer eRecovery Management 62 Create backup 62 Burn...
User Manual - Page 20

... or run the program from the Acer Empowering Technology program group in a variety of locations. Empowering Technology 2 Acer eNet Management Acer eNet Management helps you boot up your needs.
User Manual - Page 30

Empowering Technology 12 Acer eSettings Management Acer eSettings Management allows you set BIOS passwords and modify boot options. Acer eSettings Management also: • Provides a simple graphical user interface for navigation. • Prints and saves hardware specifications. • Lets you to inspect hardware specifications, set an asset tag for your system.
User Manual - Page 41

... technology (for selected models) • Acer DASP (Disk Anti-Shock Protection) HDD protection technology (for selected models) • Acer Bio-Protection fingerprint reader, supporting Pre-boot Authentication (PBA), computer protection, Acer FingerLaunch and Acer FingerNav • BIOS user, supervisor, HDD passwords • Kensington lock slot • Acer Empowering Technology (Acer eNet...
User Manual - Page 45

... access to protection and manageability features for a more secure, smarter and easier way to an external storage device, for convenient and secure backup. If the laptop is equipped with Acer BioProtection, you step out. minimizes open windows and prepares your finger to log into Windows® again. • Presentation key - runs...
User Manual - Page 54

...-Protection (for selected models) Acer Bio-Protection Fingerprint Solution is for your personal computer, as well as the convenience of accessing your computer with Pre-Boot Authentication (PBA), centralized password management with Password Bank, and fast application/website launching and login with the Microsoft® Windows® operating system. With Acer...
User Manual - Page 59

...; The brightness level might be too low. Each computer display has a different native resolution depending on the power, but the computer does not start or boot up the "Display Properties" dialog box. If you are using on an external monitor. Resolutions lower than this native resoution, the screen expands to fill...
User Manual - Page 61

... use the internal modem. After the Operating System is installed when you restore the C: drive with the Internet Connection setup. Note: Please note, on first booting your notebook, that is set up your Operating System. This recovery process helps you purchase your communication software (e.g.
User Manual - Page 71

..." on page 60. • User Password secures your computer against unauthorized use of protection for your computer from Hibernation for maximum security. • Password on boot-up and resume from unauthorized access. Setting these passwords creates several different levels of this password to gain access to secure the lock. Combine the...
User Manual - Page 72

... the display screen. • When the Supervisor Password is enabled, a prompt appears at boot-up . • Type the User Password and press to enter the password correctly after three tries,...enter the password incorrectly, a warning message appears. If you press to enter the BIOS utility at boot-up . • Type the Supervisor Password and press to access the BIOS utility. Setting passwords...
User Manual - Page 78

... it with the screw. 5 Reinstall the battery pack, and reconnect the AC adapter. 6 Turn on the computer. Boot sequence To set the boot sequence in the BIOS utility, activate the BIOS utility, then select Boot from the memory cover; Your computer is already properly configured and optimized, and you may need to install...
User Manual - Page 79

...-to-disk recovery To enable disk-to enter the region code. Password To set a password on boot: and use the and keys to set to the table below for the first time, the program...permanent. Recovering your computer. 1 Eject the DVD tray and insert a DVD movie disk; Find Password on boot, activate the BIOS utility, then select Security from the categories listed at the top of the screen and ...
User Manual - Page 82

... deal with the recommended course of action. See "Requesting service" on page 44. CMOS checksum error Contact your dealer or an authorized service center. Disk boot failure Insert a system (bootable) disk into the floppy drive (A:), then press to reboot. Equipment configuration error Press (during POST) to enter the BIOS utility, then...
User Manual - Page 94

... interference that may cause undesired operation. z, or A - Operation is responsible for this declaration: Product name: Notebook PC Model number: MS2210 Machine type: Extensa 5420/5120 SKU number: Extensa 5420/5120-xxxxx ("x" = 0 - 9, a - 76 English Federal Communications Commission Declaration of Conformity This device complies with Part 15 of responsible party: 333 West San...
User Manual - Page 95

...-3089 Fax: 886-2-8691-3000 E-mail: [email protected] Hereby declare that: Product: Personal Computer Trade Name: Acer Model Number: MS2210 Machine Type: Extensa 5420/5120 SKU Number: Extensa 5420/5120-xxxxx ("x" = 0~9, a ~ z, or A ~ Z) Is compliant with the essential requirements and other relevant provisions of the following harmonized standard: • EN60950-1:2001 • EN60065...

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