Lenovo B490 Support Question
Lenovo B490 Support Question
Find answers below for this question about Lenovo B490.Need a Lenovo B490 manual? We have 1 online manual for this item!
Question posted by shankarscbe11 on December 3rd, 2014
Forgot Supervisor Password Lenovo B490 Laptop
I forgot my bios supervisor passowrd so pls send me solution for this problem
Current Answers
Answer #1: Posted by TommyKervz on December 3rd, 2014 9:11 PM
TommyKervz
Member since:
January 10th, 2013 Points: 17,776,833
Member since:
January 10th, 2013 Points: 17,776,833
A forgotten Supervisor password will prevent access to the ThinkPad BIOS setup utility. To regain access, the system will need to be serviced to have the system board and hard drive replaced. Proof of purchase is required, and this repair is not covered under the warranty.
or you can try the instructions on the video below
Related Lenovo B490 Manual Pages
Hardware Maintenance Manual - Page 2
.... Note: Before using this information and the product it supports, be sure to restrictions set forth in Contract No. First Edition (October 2012) © Copyright Lenovo 2012.
Hardware Maintenance Manual - Page 3
... 19
Chapter 2. Related service information 33
Recovering the computer settings 33 Passwords 33
Power-on password 34 Supervisor password 34 Power management 34 Screen blank mode 34 Sleep mode 34 Hibernation mode 35
Chapter 5. FRU replacement notices 41
Screw notices 41
Chapter 7. Lenovo B490 37
Specifications 37 Status indicators 38 Fn key combinations 39
Chapter 6. Locations...
Hardware Maintenance Manual - Page 5
... is divided into the following Lenovo® products. Use this manual to troubleshoot problems effectively.
• Before servicing a Lenovo product, be sure to troubleshoot problems.
The manual is intended only for
servicing computers. • The product-specific section includes service, reference, and product-specific parts information. Machine Lenovo B490
Machine type (MT) 3756, 3772...
Hardware Maintenance Manual - Page 7
... lb) or that you can stand safely without slipping. 2. Never move suddenly or twist when you service a Lenovo Notebook. • "General safety" on page 1 • "Electrical safety" on page 2 • "...so that other conditions that are fastened or rolled up with labels or stickers.
© Copyright Lenovo 2012
1 this action removes the strain from the end. • Do not wear jewelry, ...
Hardware Maintenance Manual - Page 9
...Send...present, you must not be considered sensitive to assist you can continue without first correcting the problem.
Check for damage (loose, broken, or sharp edges). 2. Notes: 1. Chapter 1. ...metal filings, contamination, water or other liquids, or signs of any obvious non-Lenovo alterations. Use product-specific ESD procedures when they present: • Electrical hazards, ...
Hardware Maintenance Manual - Page 33
...be damaged. An
untrained person runs the risk of them does not correct the problem, reinstall that the latest BIOS is
connected. • Do not turn off or put your search: &#...a system board is replaced, ensure that board, and then replace the other one.
© Copyright Lenovo 2012
27 "Important notice for replacing and servicing FRUs: • If you are instructed to improve the...
Hardware Maintenance Manual - Page 34
...format before doing this task. Improper handling of a system board can be ready to meet Lenovo's requirements and schedule in the Hardware Maintenance Manual or direct substitutions can be RoHS
28 ... a hard disk drive (HDD). If you are identified by the unique FRU part numbers. Lenovo plans to transit to RoHS compliance before June 2006 are very sensitive. RoHS compliant FRUs have ...
Hardware Maintenance Manual - Page 35
... trained personnel should not be responsible for a variety of an optical drive
© Copyright Lenovo 2012
29 Single failures can occur for repair costs if the computer damage was caused by misuse... again. Name and phone number of purchase 5. Date of service technician 2. Before checking problems with the computer, determine whether the damage is a list of some common items that ...
Hardware Maintenance Manual - Page 36
...suspect a power problem, see the ...password (making the computer unusable) • Sticky keys caused by nonwarranted activities: • Missing parts might indicate damage caused by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on laptop products
The following :
• Replace the system board.
• If the problem persists, go to Chapter 5 "Lenovo B490...
Hardware Maintenance Manual - Page 37
...To check the battery pack, do the following : 1. Terminal 1 7
Voltage (V dc) + 0 to launch the Lenovo Experience program, and then click Battery Health. Note: Recharging will take at room temperature for a while. If the battery ... it . If the voltage is still not charged, go to launch the Lenovo Solution Center program, and then click Battery. -
After it cools down, reinstall ...
Hardware Maintenance Manual - Page 39
...do the following:
- To avoid data loss, back up the contents on password and the supervisor password.
© Copyright Lenovo 2012
33 Related service information
This chapter presents the following :
- You can...default settings. Changing the startup settings of the programs.
Passwords
As many as two passwords might be restored to do the following information: • "Recovering the computer...
Hardware Maintenance Manual - Page 40
... is set on . To reduce power consumption, the computer has three power management modes: screen blank, sleep, and hibernation.
Note: If only a supervisor password is no service procedure to the BIOS and change the system configuration. The system board must be entered before an operating system can be displayed on the screen whenever...
Hardware Maintenance Manual - Page 43
...; External monitor connector • 4-in-1 digital media card reader slot
© Copyright Lenovo 2012
37 then
click Properties. • Windows 8: From the desktop, move the cursor... mm) • Resolution:
- Chapter 5.
External monitor: Maximum 2048-by -768 - Lenovo B490
This chapter presents the following product-specific service references and parts information: • "Specifications"...
Hardware Maintenance Manual - Page 45
... computer display and an external monitor. Note: You also can use the Windows+P combination to the next track Enables or disables the scroll lock function.
Lenovo B490 39 Attention:
• When the indicator is on , do not put the computer into sleep mode.
To disable the feature, press Fn+F2. Enables or...
Hardware Maintenance Manual - Page 47
... as follows:
• Plastic to plastic Turn an additional 90 degrees after the screw head touches the surface of the replacement CRU. In the Lenovo notebook computer, this problem is required: (1) return instructions, a prepaid shipping label, and a container will ship the CRU to plastic Turn an additional 180 degrees after the screw...
Hardware Maintenance Manual - Page 49
... and other small parts are loose inside the computer.
and (2) you can resolve some problems with your product. Be sure to be included with a replacement part you might be ...CRU to service any FRU, review Chapter 6 "FRU replacement notices" on installing the CRU, Lenovo will be removed before replacing the failing FRU. Installation of damaging parts.
2. Your computer might ...
Hardware Maintenance Manual - Page 83
Lenovo B490 front view
1 Integrated camera (on page 38.
© Copyright Lenovo 2012
77 Locations
This chapter presents the locations of the indicators, see "Status indicators" on some ... pad buttons 7 Power and battery indicator1 8 Power button 9 Recovery button
1 For the description of the Lenovo B490 hardware components. Chapter 8. Front view
2 1 2
4 9 8
3 4
7 6
5
Figure 1.
Hardware Maintenance Manual - Page 84
Lenovo B490 right-side view 1 Combo audio jack 2 USB connector 3 Optical drive
Bottom and left -side view
1 Battery latch 2 Battery pack 3 Battery..., and wireless cards are located underneath the bottom slot cover.
78 Hardware Maintenance Manual Right-side view
Figure 2. Lenovo B490 bottom and left -side view
45 3 12
4 USB connector 5 ac power connector
1 2 3
10
4 5
8 76 9
Figure 3.
Hardware Maintenance Manual - Page 85
... specified.
• A CRU is a self-service CRU; Follow the on installing the CRU, Lenovo will be charged for customers:
You can install yourself, called a "Customer Replaceable Unit" or "CRU...you can resolve some problems with your product and are concealed by more than two screws. You can request that are available from Lenovo at http://www.lenovo.com/UserManuals. Self-...
Hardware Maintenance Manual - Page 89
...102500228 N
102500018 N
102500017 N
102500016 N
102500015 N
102001065 N
102500230 N
102500101 N
102500133 N
102500350 N
102500301 N
102500303 N
102500362 N
102500440 N
102500433 N
102500421 N
102500435 N
90000220 N
90000979 N
LCD FRUs
In Lenovo B490 models, the type of LCD is 14-inch high definition (HD) TFT LCD (Table 4 "Parts list LCD" on page 88.)
FRU no.
FRU (Overall...
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