Lenovo B575 Support Question
Lenovo B575 Support Question
Find answers below for this question about Lenovo B575.Need a Lenovo B575 manual? We have 4 online manuals for this item!
Question posted by callumisastar on January 8th, 2013
Lenovo B575 Black Screen When I Start Up My Laptop Nuffink Else
when i start up my laptop the light are on it makes the starty up noise and all i get is the black screen
Current Answers
Answer #1: Posted by tintinb on January 9th, 2013 5:54 PM
tintinb
Member since:
October 26th, 2012 Points: 7,056,560
Member since:
October 26th, 2012 Points: 7,056,560
There are several possible reasons why your computer system gets a black screen problem. These are the following causes of computer black screen.
1. Corrupted system files of Windows
2. Failed video drivers
3. Failed graphics card
4. Faulty keyboard
5. Problems in BIOS
6. Motherboard problems
You can read the following articles to know the specific steps to take for the recovery of your computer black screen.
- http://tips4pc.com/articles/computer%20troubleshooting/computer_has_a_black_screen_and.htm
- http://www.squidoo.com/black-screen-computer-problem
- http://support.microsoft.com/kb/314503
- http://www.geekswhoknow.com/articles/reasons_you_get_a_blank_screen.php
If you have more questions, please don't hesitate to ask here at HelpOwl. Experts here are always willing to answer your questions to the best of our knowledge and expertise.
Regards,
Tintin
Related Lenovo B575 Manual Pages
Lenovo B575 Setup Poster V1.0 - Page 1
... Printed in China
Lenovo B575
Setup Poster V1.0
Read the safety notices and important tips in damages to Lenovo Idea product support site http://support.lenovo.com for Windows ...can find all preinstalled software downloads.
Lenovo, Lenovo logo and OneKey are either registered trademarks or trademarks of your computer.
* For more details on -screen instructions Setup Poster - Users of...
Lenovo B575 Limited Warranty and Product Specific Notices V1.0 - Page 10
...specific notices
Electronic emissions notices
The following information refers to Lenovo B575, machine type 20119, 1450.
„ Federal Communications ...equipment generates, uses, and can be used in a residential installation. If this equipment. Responsible party: Lenovo (United States) Incorporated 1009 Think Place -
However, there is no guarantee the interference will not ...
Hardware Maintenance Manual - Page 3
... of factory default 23 Using recovery discs 23 Passwords 24 Power-on password 24 Supervisor password 24 Power management 25 Screen blank mode 25 Sleep (standby) mode 25 Hibernation mode 26
Lenovo B575 27 Specifications 27 Status indicators 29 Fn key combinations 31 FRU replacement notices 32
Screw notices 32 Removing and replacing...
Hardware Maintenance Manual - Page 6
...working in any action that causes hazards to the customer, or that makes the machine unsafe. • Before you start the machine, make sure that other parts in a safe place, keeping them with ...ground wires. Make sure that your sleeves are put during
and after the maintenance. • When lifting any safety device that can stand safely without slipping. 2. Lenovo B575 Hardware Maintenance...
Hardware Maintenance Manual - Page 10
... the person handling the part are wearing a wrist strap. • Use the black side of the computer is required for operator safety and correct system function. Proper grounding... of a grounded work mat to any frame ground, ground braid, or greenwire ground.
- Lenovo B575 Hardware Maintenance Manual
Handling devices that are inserted into the product. • Avoid contact with other...
Hardware Maintenance Manual - Page 20
... and BIOS, follow the steps below: 1. Lenovo B575 Hardware Maintenance Manual
Important service information
This chapter..., and BIOS downloads are posted on the screen and install the necessary software.
16 Go ...Lenovo smart downloading. 3. Follow the directions on the customer support site: http://consumersupport.lenovo.com/. "Strategy for replacing FRUs
Before replacing parts: Make...
Hardware Maintenance Manual - Page 24
... by attachment of a nonsupported device • Forgotten computer password (making the computer unusable) • Sticky keys caused by spilling a ... 3. Failing FRU name and part number 7. Date on laptop products
The following information in which the machine failed 4. ... detected 6. Name and phone number of servicer 2. Lenovo B575 Hardware Maintenance Manual
What to do first
When you ...
Hardware Maintenance Manual - Page 26
If the charge indicator still does not light on , remove the battery pack and let it return to 30 KΩ. If... though the indicator does not light on. If the resistance is still less than +11.0 V DC, the battery pack has been discharged. Lenovo B575 Hardware Maintenance Manual
Perform operational charging. Checking the battery pack
Battery charging does not start until the Power Meter shows...
Hardware Maintenance Manual - Page 28
...entered. If any Lenovo computer: the poweron password (POP) and the supervisor password (SVP). The computer does not start until the password... and cannot be replaced for it appears on the screen whenever the computer is no service procedure to reset ...password (POP) protects the system from being powered on . Lenovo B575 Hardware Maintenance Manual
When you use the recovery discs to boot...
Hardware Maintenance Manual - Page 35
...Enable/Disable the touchpad. Fn + F12:
Skip to the previous track.
Fn + F9:
Start/Pause playback of Windows Media Player.
Fn + F4:
Open the interface for the display device...F10:
Stop playback of Windows Media Player.
Lenovo B575
Fn key combinations
The following table shows the function of each combination of the LCD screen. Fn key combinations
Key combination
Description
Fn ...
Hardware Maintenance Manual - Page 42
Pull the optical drive out in the direction shown by arrow c.
1
Step
a
Screw (quantity)
Color
M2 × 3 mm, flat-head, nylok-coated (1) Black
Torque 1.5 kgfcm
2 3
38 Lenovo B575 Hardware Maintenance Manual
1050 Optical drive
For access, remove this FRU: • "1010 Battery pack" on page 34 • "1030 Hard disk drive(HDD)/Memory/...
Hardware Maintenance Manual - Page 44
...: wireless LAN card has 2 cables in step a. Step
b
Screw (quantity)
Color
M2 × 3 mm, flat-head, nylok-coated (1) Black
Torque 1.5 kgfcm
40 wireless LAN card in some models may have 3 cables in step a.
Lenovo B575 Hardware Maintenance Manual
1070 PCI Express Mini Card for wireless LAN/WAN
2
1
Disconnect the two wireless LAN cables...
Hardware Maintenance Manual - Page 45
...Lenovo B575
Figure 7. Removal steps of PCI Express Mini Card for wireless LAN/WAN (continued)
Remove the card in the direction shown by arrow c .
3
When installing: • In models with a wireless LAN card that has two antenna connectors, plug
the black...In models with a wireless LAN card that has three antenna connectors, plug the black cable (1st) (MAIN) into the jack labeled 1, the grey cable (...
Hardware Maintenance Manual - Page 46
Removal steps of keyboard
Remove three screws a.
1
1 1
Step
a
Screw (quantity)
Color
M2.5 × 8 mm, flat-head, nylok-coated (3) Black
Torque 2.5 kgfcm
42 Lenovo B575 Hardware Maintenance Manual
1080 Keyboard
For access, remove this FRU: • "1010 Battery pack" on page 34 • "1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot
compartment cover" on page 36
Figure 8.
Hardware Maintenance Manual - Page 49
Lenovo B575
1090 Keyboard bezel
For access, remove these FRUs in order: • "1010 Battery ... on the bottom.
2 1
1
2 2
1
1 1
1 1
1 1
1
Step
a
b
Screw (quantity)
Color
M2.5 × 8 mm, flat-head, nylok-coated (10)
Black
M2 × 2.5 mm, flat-head, nylok-coated (3) White
Torque 2.5 kgfcm
1.5 kgfcm
45 Removal steps of keyboard bezel
Remove ten screws a and three screws b on page...
Hardware Maintenance Manual - Page 50
Removal steps of keyboard bezel (continued)
Remove the screw c.
3
Step
c
Screw (quantity)
Color
M2 × 6 mm, flat-head, nylok-coated (1) Black
Torque 2.5 kgfcm
46 Lenovo B575 Hardware Maintenance Manual
Figure 9.
Hardware Maintenance Manual - Page 52
Lenovo B575 Hardware Maintenance Manual
Figure 9. Removal steps of keyboard bezel (continued)
Remove the keyboard bezel in the direction shown by arrow g.
7
Remove the screw h, and then remove the power board i.
8 9
Step
h
Screw (quantity)
Color
M2 × 3.5 mm, flat-head, nylok-coated (1) Black
Torque 2.5 kgfcm
48
Hardware Maintenance Manual - Page 54
Lenovo B575 Hardware Maintenance Manual
Figure 10. Unplug the LCD connector in the direction shown by arrow b, and four connectors in the direction shown by arrow c.
3
2
1 3
1
3 1
1
When installing: Make sure that all the connectors are attached firmly. Step Screw (quantity)
a M2 × 6 mm, flat-head, nylok-coated (4)
Color Torque Black 2.5 kgfcm
50 Removal steps of...
Hardware Maintenance Manual - Page 60
Lenovo B575 Hardware Maintenance Manual
1130 Base cover, speakers and bluetooth card
For access, remove these FRUs in the direction shown by arrows b.
1 1
2
1 1
2
Step Screw (quantity)
a M2 × 3.5 mm, flat-head, nylok-coated (4)
Color Black
Torque 2.5 kgfcm
Remove the bluetooth card in order: • "1010 Battery pack" on page 34 • "1020 Dummy card...
Hardware Maintenance Manual - Page 64
Lenovo B575 Hardware Maintenance Manual
Figure 16. Removal steps of LCD panel, LCD cable and hinges (continued)
Remove four screws d and remove the hinges in the direction shown by arrow e.
4 5 4
4 5 4
Step
d
Screw (quantity) M2 × 2.5, flat-head, nylokcoated (4)
Color Black
Torque 1.5 kgfcm
60
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