Lenovo B40-45 Support Question
Lenovo B40-45 Support Question
Find answers below for this question about Lenovo B40-45.Need a Lenovo B40-45 manual? We have 7 online manuals for this item!
Question posted by powellthomas870 on April 25th, 2024
How To Reset/bypass Superviser Password On Lenovo B40-45
Hi,I am looking for a way to reset the admin/superviser password on my Lenovo B40-45 laptop (I previously set one and now can't remember it.) I have tried various ways to reset it such as removing CMOS battery for several hours, but can't get anywhere.Is there some sort of backdoor password I can use to reset the BIOS with?Thanks.
Current Answers
Answer #1: Posted by Technoprince123 on April 25th, 2024 10:18 AM
Technoprince123
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Please response if this answer is acceptable and solw your problem thanks
Answer #2: Posted by SonuKumar on April 25th, 2024 9:02 AM
SonuKumar
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Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful.
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Related Lenovo B40-45 Manual Pages
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 25
...; Replace the system board. • If the problem persists, go to "Lenovo B40‐30/B40‐45/B40‐70" on page 27. Note: Noise from the computer. 2. Make sure that the battery pack supplies power when you turn on the computer. 5. Remove the battery pack. 3.
Make sure that has less than 50% of the total power...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 26
... its capacity. Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
Perform operational charging. To check your battery, move your cursor to the Power Meter icon in the icon tray of battery power remaining is displayed. If the charge indicator or icon is still not charged, go to 100% of the total power remains; Remove it from...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 28
...HDP has been forgotten, check whether a master HDP has been set , a prompt for it appears on the screen whenever the ...Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
Passwords
As many as three passwords may be needed for any Lenovo computer: the power‐on by an unauthorized person. If it has, it to get access to reset the password. Power-on password
A power‐on password...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 35
If you have one. Lenovo B40-30/B40-45/B40-70
FRU replacement notices
This section presents notices related to the torque shown in your tool bag. • Remove screws carefully for each step.
• Make sure that have a torque screwdriver, refer to tighten. • Each one . Read this problem is addressed with special ...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 36
...removing any FRUs that all power cords from electrical outlets, remove the battery pack, and then disconnect any FRU, review "FRU replacement notices" on page 62. 8.
Any of such FRUs are listed. 4. Remove them in the order in place, reverse the removal... used in the figure. 7.
Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
Removing and replacing an FRU
This section...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 37
... the slot. Then make sure the manual battery latch in the parts list for your computer. Lenovo B40-30/B40-45/B40-70
1010 Battery pack
DANGER • Only use the battery specified in the lock position.
33
While holding the spring‐loaded battery latch in the unlocked position b , then remove the battery pack in the direction shown by arrow...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 40
Then remove the bottom slot cover by arrow b .
1
1
2
Step
a
Screw (quantity) M2.5 x 5 mm, flat‐head, nylok‐coated (2)
Color Black
Torque 2.0~2.5kgf.cm
36 Removal steps of bottom slot cover
Remove the two screws a . Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
1030 Bottom slot cover
For access, remove this FRU: "1010 Battery pack" on page 33 Figure 3.
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 60
Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
1150 LCD front bezel
For access, remove these FRUs: • "1010 Battery pack" on page 33 • "1020 Optical drive" on page 34 • "1030 Bottom slot cover...board" on page 48 • "1140 LCD unit and base cover" on page 52 Figure 15. Removal steps of LCD front bezel
Remove the LCD front bezel in the direction by arrow a.
1 1
1 1
56
Lenovo Regulatory Notice for wireless adapter (EU) - Lenovo B40-xx, B50-xx, B50-30 Touch, E40-xx Notebook - Page 1
... Lenovo products: • Lenovo B40‐30/N40‐30 • Lenovo B40‐70/N40‐70 • Lenovo B40‐45/N40‐45 • Lenovo B50‐30 • Lenovo B50‐30 Touch • Lenovo B50‐70/N50‐70 • Lenovo B50‐45/N50‐45 • Lenovo B40‐80 • Lenovo B50‐80 • Lenovo E4030 • Lenovo E4070 • Lenovo...
Lenovo Regulatory Notice for wireless adapter (Non-EU) - Lenovo B40-xx, B50-xx, B50-30 Touch, E40-xx Notebook - Page 1
... Lenovo products: • Lenovo B40‐30/N40‐30 • Lenovo B40‐70/N40‐70 • Lenovo B40‐45/N40‐45 • Lenovo B50‐30 • Lenovo B50‐30 Touch • Lenovo B50‐70/N50‐70 • Lenovo B50‐45/N50‐45 • Lenovo B40‐80 • Lenovo B50‐80 • Lenovo E4030 • Lenovo E4070 • Lenovo...
Lenovo Regulatory Notice for wireless adapter (US/Canada) - Lenovo B40-xx, B50-xx, E40-xx Notebook - Page 1
... Lenovo products: • Lenovo B40‐30/N40‐30 • Lenovo B40‐70/N40‐70 • Lenovo B40‐45/N40‐45 • Lenovo B50‐30 • Lenovo B50‐30 Touch • Lenovo B50‐70/N50‐70 • Lenovo B50‐45/N50‐45 • Lenovo B40‐80 • Lenovo B50‐80 • Lenovo E4030 • Lenovo E4070 • Lenovo...
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 3
Model name Lenovo B40-30 Lenovo B40-70 Lenovo B40-45 Lenovo B50-30 Lenovo B50-30 Touch Lenovo B50-70 Lenovo B50-45 Lenovo N40-30 Lenovo N40-70 Lenovo N50-70 Lenovo N40-45 Lenovo N50-45
MT 20390, 80F1 20392, 80F3 20394, 80F5 20382, 80ES 20383, 80ET 20384, 80EU 20388, 80F0 20460, 80H4 20462, 80H6 20439, 80HA 20461, 80H5 20441, 80HC Lenovo
User Guide
Instructions and technical information...
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 21
...system when it up to sleep. Attention:
• Wait until the power and battery status indicator light starts blinking green (indicating that the computer is in sleep mode...used. For the Windows 8.1 operating system:
Open the charms bar, then select Settings
Power
Sleep.
Moving your computer, you can put the computer to sleep or ...computer to resume use, bypassing the startup process.
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 35
... not respond, remove the battery pack and the AC power adapter.
• Your computer might damage your computer, press and hold the power button for 4 seconds or more. Make sure that the device is included in the EFI list in the BIOS setup utility correctly.
• Press F12 when the Lenovo logo appears...
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 37
...the locked position.
31 While holding the spring‐loaded battery latch in the unlocked position b , remove the battery pack in the direction shown by Lenovo. To replace the battery pack, do the following: 1 Unlock the manual battery latch a . CRU instructions
Replacing the battery pack
Note: • Use only the battery provided by the arrow c .
1
1 2
3
2
2 Install a fully charged...
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 39
Appendix A. CRU instructions To replace the hard disk drive, do the following: 1 Remove the battery pack. For details, see "Replacing the battery pack" on
page 31. 2 Remove the screws a , and then remove the bottom slot cover b .
1 1
2
3 Remove the frame fixing screws c .
3 3
33
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 41
...memory, or install an unsupported memory type, a warning beep will sound when you try to start the computer. • Make sure the computer is turned off and ...memory
You can increase the amount of the DDR3 SDRAM module. 2 Remove the battery pack.
For details, see "Replacing the battery pack" on page 31. 3 Remove the screws a , and then remove the bottom slot cover b .
1
1
2
35 DDR3 SDRAM ...
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 44
Appendix A. For details, see "Replacing the battery pack" on page 31.
2 Remove the screws a , and then remove the bottom slot cover b .
1
1
2
3 Disconnect the two wireless LAN cables (one black, one white) c . Remove the screw that secures the wireless LAN card d .
4 3 3
38 CRU instructions.... • Make sure the computer display is closed to avoid being damaged.
1 Remove the battery pack.
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 46
... you replace the optical drive. • Make sure the computer display is closed to avoid being damaged.
1 Remove the battery pack. B40-30/N40-30/B40-70/N40-70/B40-45/N40-45:
1
B50-30/B50-30 Touch/B50-70/N50-70/B50-45/N50-45:
1
40 For details, see "Replacing the battery pack" on page 31.
2 Remove the screw a . Appendix A.
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 48
... and all the cables disconnected from the computer
before you replace the keyboard. • Make sure the computer display is closed to avoid being damaged.
1 Remove the battery pack. Appendix A. For details, see "Replacing the battery pack" on page 31.
2 Remove the screws a .
1
1
1
3 Turn the computer over and open the display panel.
42
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