Lenovo G575 Support Question
Lenovo G575 Support Question
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Question posted by usuPEP on June 14th, 2014
Lenevo G575 Won't Turn On
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Current Answers
Answer #1: Posted by freginold on May 31st, 2020 6:39 AM
freginold
Member since:
December 20th, 2011 Points: 23,254,995
Member since:
December 20th, 2011 Points: 23,254,995
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/system board. Without being able to troubleshoot the laptop, it's almost impossible to say for sure which of the components is causing the problem.
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 (the board that the charger plugs into) or the motherboard. Amazon.com sells power boards (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 Lenovo G575 Manual Pages
Lenovo G470/G475/G570/G575 User Guide V1.0 - Page 1
Lenovo G470/G475/ G570/G575
User Guide V1.0
Read the safety notices and important tips in the included manuals before using your computer.
Lenovo G470/G475/G570/G575 User Guide V1.0 - Page 6
... system (If OneKey Rescue system has been preinstalled) when the computer is powered off. d Power button
Press this button to turn on page 29.
2 Chapter 1. Getting to know your computer
„ G570/G575
1
2
3
6 5 4
7 8
6
a Integrated camera
Use the camera for video communication. b Wireless module antennas (Select
models only)
The built-in antennas ensure...
Lenovo G470/G475/G570/G575 User Guide V1.0 - Page 12
Chapter 1. Getting to know your computer
„ G570/G575
1
2
3
5
4
5
8
Lenovo G470/G475/G570/G575 User Guide V1.0 - Page 19
G570/G575 The keyboard has a separate numeric keypad. Chapter 2. Learning the basics
Using the keyboard
Your computer has a numeric keypad and function keys incorporated in its standard ...
Lenovo G470/G475/G570/G575 User Guide V1.0 - Page 21
...Windows Media Player.
Fn + F10:
Stop playback of each function key.
Fn + F2:
Turn on/off the backlight of Windows Media Player. Fn + F11:
Skip to the next track....
Enable/Disable the touchpad.
Fn + End:
Activate the break function. Fn + Esc:
Turn on /off the integrated camera. Fn + Insert (G570/G575): Fn + PgUp (G470/G475): Enable/Disable the scroll lock.
Fn + F8 (G470...
Lenovo G470/G475/G570/G575 User Guide V1.0 - Page 35
... are of the Lenovo G570, unless otherwise stated. • The following : 1 Turn off the computer.
2 Close the computer display, and turn the computer over. 3 Unlock the manual battery latch a .
Note: If you are the same for the G470, G475,
G570 and G575. Replacing the battery
Note: Use only the battery provided by the...
Hardware Maintenance Manual - Page 3
... Power-on password 24 Supervisor password 24 Power management 25 Screen blank mode 25 Sleep (standby) mode 25 Hibernation mode 26
Lenovo G470/G475/G570/G575 27 Specifications 27 Status indicators 29 Fn key combinations 31 FRU replacement notices 32
Screw notices 32 Removing and replacing an FRU 33
1010 Battery...
Hardware Maintenance Manual - Page 4
Before servicing a Lenovo product, make sure to troubleshoot problems effectively. Important: This manual is divided into the following Lenovo product:
Lenovo G470/G475/G570/G575 Use this manual to troubleshoot problems. The manual is intended only for servicing computers. •• The product-specific section includes service, reference, and product-...
Hardware Maintenance Manual - Page 5
Safety information
Safety information
This chapter presents the following safety information that you need to get familiar with before you service a Lenovo G470/G475/G570/G575 computer: •• "General safety" on page 2 •• "Electrical safety" on page 3 •• "Safety inspection guide" on page 5 •• "Handling devices that ...
Hardware Maintenance Manual - Page 6
Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
General safety
Follow these rules below to ensure general safety: •• Observe a good housekeeping in your back. Never move suddenly or ...
Hardware Maintenance Manual - Page 8
... off the power. - Examples of the units.)
•• If an electrical accident occurs: - The surface is conductive; Power supply units - Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
•• Always look carefully for possible hazards in a machine: -
Hardware Maintenance Manual - Page 24
...by spilling a liquid onto the keyboard •• Use of an incorrect AC adapter on laptop products
The following symptoms might indicate damage caused by nonwarranted activities: •• Missing parts ... physical or operating environment, or improper maintenance by the customer. Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
What to do first
When you do return an FRU, you must...
Hardware Maintenance Manual - Page 25
...see the appropriate one you are here because the computer fails only when the AC adapter is supplied when you turn on the computer. 5. See the
following figure:
Pin
Voltage (V DC)
1
+20
2
0
2 1...the system board. •• If the problem continues, go to "Lenovo G470/G475/G570/G575" on the
computer. Unplug the AC adapter cable from the AC adapter does not always indicate...
Hardware Maintenance Manual - Page 26
... battery pack and let it at least 3 hours, even though the indicator does not light on.
Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
Perform operational charging. Then reinstall the battery pack.
Note: If the battery pack becomes hot, it from ... tray of the Windows® taskbar and wait for at room temperature for a while. Turn off , replace the battery pack.
Hardware Maintenance Manual - Page 28
...user must be entered before an operating system can be made available to the servicer, there is turned on by an unauthorized person. Note: The recovery process might take up to complete the whole ...power-on password (POP) protects the system from being powered on . Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
When you use the recovery discs to boot your computer, the system will enter...
Hardware Maintenance Manual - Page 30
... drive, the parallel connector, or the diskette drive within that action: - Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
Hibernation mode
In hibernation mode, the following conditions: •• If a "...;• The system is restored from hibernation mode and resumes operation. When the power is turned on the hard disk drive is read, and system status is powered off. To cause ...
Hardware Maintenance Manual - Page 34
...of its capacity.
Sudden physical shock could cause drive errors.
30
Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
Table 2. Blinking white:
The battery is operating on battery power with the... is on ):
The battery is on, do not put the computer into standby mode or turn off /3.2s on . Status indicators (continued)
Indicator
4 Battery status
5 Wireless
status
6 Drive...
Hardware Maintenance Manual - Page 35
...Fn + / :
Increase/Decrease sound volume.
31
Fn key combinations
Key combination
Description
Fn + Esc:
Turn on/off the backlight of Windows Media Player.
Fn + End:
Activate the break function. Fn + ... devices settings (on /off the integrated camera. Lenovo G470/G475/G570/G575
Fn key combinations
The following table shows the function of each combination of...
Hardware Maintenance Manual - Page 36
...Keep the screw kit in the table. Tighten screws as follows: •• Plastic to plastic
Turn an additional 90° after the screw head touches the surface of the plastic part:
more than ...before replacing any FRU. Lenovo G470/G475/G570/G575 Hardware Maintenance Manual
FRU replacement notices
This section presents notices related to plastic Turn an additional 180° after the screw head...
Hardware Maintenance Manual - Page 37
... the correct sequence in the steps to remove the FRU, as shown in the figure. 7. When turning a screw to , and can cause electrical short circuits. Before touching it, establish personal grounding by... The illustrations used in this by the arrow in the procedures. Lenovo G470/G475/G570/G575
Removing and replacing an FRU
This section presents exploded figures with one hand or using an ...
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