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 robbiyanta25 on March 25th, 2016
Bootmgr Is Missing Press Ctrl Alt Del To Restart
How Can I Fix It?Lenovo 20207When I Restart, The screen show me "bootmgr is missing press ctrl+alt+del to restart". What can I do.Thank You
Current Answers
Answer #1: Posted by TechSupport101 on March 25th, 2016 10:48 PM
TechSupport101
Member since:
May 24th, 2013 Points: 12,171,305
Member since:
May 24th, 2013 Points: 12,171,305
Hi. Use one of the 4 methods discussed here https://support.microsoft.com/en-us/kb/2622803 - Though reinstalling your operating system from a CD is the easiest fix if you are not very Computer geeky :)
Related Lenovo B490 Manual Pages
Hardware Maintenance Manual - Page 2
... "GSA" contract, use, reproduction, or disclosure is subject to read the general information under Appendix A "Notices" on page 93. First Edition (October 2012) © Copyright Lenovo 2012. Note: Before using this information and the product it supports, be sure to restrictions set forth in Contract No.
Hardware Maintenance Manual - Page 3
...Passwords 33
Power-on password 34 Supervisor password 34 Power management 34 Screen blank mode 34 Sleep mode 34 Hibernation mode 35
Chapter 5. ... cover . . . 75
Chapter 8. Notices 93
Electronic emissions notices 94 Trademarks 94
© Copyright Lenovo 2012
i Lenovo B490 37
Specifications 37 Status indicators 38 Fn key combinations 39
Chapter 6. Parts list 79
Overall 80 LCD ...
Hardware Maintenance Manual - Page 5
Important:
• This manual is divided into the following Lenovo® products. Machine Lenovo B490
Machine type (MT) 3756, 3772, 20205, 20207
Use this manual to read all the information under Chapter 1 "Safety information" on page 1 and Chapter 2 "Important service information" on page 27.
© Copyright Lenovo 2012
iii About this manual
This manual provides service...
Hardware Maintenance Manual - Page 7
... move suddenly or twist when you can be familiar with labels or stickers.
© Copyright Lenovo 2012
1 Lift by standing or by pushing up above your eyes. • After service...safety
Follow these rules to the customer, or that makes the equipment unsafe. • Before you service a Lenovo Notebook. • "General safety" on page 1 • "Electrical safety" on page 2 • "...
Hardware Maintenance Manual - Page 8
...; If you may prevent a current from passing through your electrical hand tools for these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds.
• Do not touch live electrical currents. Blowers and fans - Many customers have handles covered with a soft material that does not insulate you...
Hardware Maintenance Manual - Page 9
... CRT face or a bulging capacitor • Mechanical hazards, such as loose or missing hardware
To determine whether there are sensitive to electrostatic discharge
Any computer part containing transistors... and built, required safety items were installed to get medical aid.
If any non-Lenovo alterations. 7. Begin the checks with . Check exterior covers for cracked or bulging batteries...
Hardware Maintenance Manual - Page 33
... board before completing the service action. To download software fixes, drivers, and BIOS, do the following strategy to ...Lenovo 2012
27 Otherwise, the system board might be damaged. The BIOS and device drivers are customer-installable. Strategy for replacing FRUs" on the screen and install the necessary software. 4.
Chapter 2. Click Download Drivers & Software. Restart...
Hardware Maintenance Manual - Page 34
...may cause a system malfunction.
Products on the hard disk to have RoHS compliant parts. Lenovo plans to transit to RoHS compliance before June 2006 are very sensitive.
RoHS requirements must be... implementation date, the failed RoHS compliant parts must be ready to be implemented on Lenovo products placed on a system board are not required to be overwritten. The following ...
Hardware Maintenance Manual - Page 35
... a problem recurs. If the error does not recur, do with a hardware defect, such as copying, saving, or formatting.
Date of an optical drive
© Copyright Lenovo 2012
29 Procedure index and page number in the parts exchange form or parts return form that have been altered. Before checking problems with another...
Hardware Maintenance Manual - Page 36
... If the computer does not charge during operation, go to Chapter 5 "Lenovo B490" on the computer. Measure the output voltage at the plug of the ac...might indicate damage caused by nonwarranted activities: • Missing parts might be a symptom of unauthorized service or modification...of an incorrect ac power adapter on laptop products
The following :
• Replace the system board.
•...
Hardware Maintenance Manual - Page 37
... battery pack from being overcharged or from the ac power adapter does not always indicate a defect. On the Windows operating system, press the recovery button to be able to launch the Lenovo Solution Center program, and then click Battery. - Note: If the battery pack becomes hot, it is less than 95% of...
Hardware Maintenance Manual - Page 39
...service information
This chapter presents the following recovery programs are available for a Lenovo notebook computer: the power-on the hard disk drive, you can ...a Windows 7 operating system:
- Starting up the contents on password and the supervisor password.
© Copyright Lenovo 2012
33 To avoid data loss, back up all the data you have stored on the hard disk drive will...
Hardware Maintenance Manual - Page 40
...; If the battery indicator blinks orange, indicating that the battery power is powered off monitor" timer on .
To end screen blank mode and resume normal operation, press Fn+F2. To enter sleep mode, press Fn+F1.
Power management
Note: Power management modes are not supported for APM operating system.
If any of the...
Hardware Maintenance Manual - Page 41
... accept any operation with the
keyboard, the hard disk drive, the parallel connector, or the diskette drive within that action. • Closing the lid. • Pressing the power button. Also, the computer goes into hibernation mode automatically in either of the following conditions: • If a "hibernation time" has been set on...
Hardware Maintenance Manual - Page 43
...External monitor connector • 4-in-1 digital media card reader slot
© Copyright Lenovo 2012
37 Chapter 5.
Lenovo B490
This chapter presents the following product-specific service references and parts information: •...on some models for the Lenovo B490 models. Processor • Windows 7: To view the system properties of the screen to
display the charms. Then click Settings ➙...
Hardware Maintenance Manual - Page 44
... Lock key.
38 Hardware Maintenance Manual Status indicators Indicator 1 Caps Lock
Meaning
White: Caps Lock mode is enabled. To enable or disable Caps Lock mode, press the Caps Lock key.
2 Numeric Lock
White: The separate numeric keypad on some models) • Integrated WiMAX • 100/1000 Mbps Ethernet communication
Security feature...
Hardware Maintenance Manual - Page 45
... computer display and an external monitor. Table 2. To resume normal operation, press the Fn key only.
Lenovo B490 39 Table 1. When the battery charge level reaches 80%, the battery status... features. Fn key combinations
The following table describes the functions of the computer screen. Chapter 5.
Enables or disables the numeric keypad. Puts the computer into sleep...
Hardware Maintenance Manual - Page 47
...Logic card to return the defective CRU. Installation of the replacement CRU. If you intend on -screen instructions to find a list of CRUs for customers: You can resolve some problems with your receipt...can be charged for your responsibility. You might be found at any FRU. In the Lenovo notebook computer, this manual can either install the CRU yourself or you might be included ...
Hardware Maintenance Manual - Page 49
... to , and can be damaged by using an electrostatic discharge (ESD) strap (P/N 6405959).
© Copyright Lenovo 2012
43 Such FRUs are loose inside the computer. Chapter 7. Removing and replacing a FRU
This chapter provides instructions on -screen instructions to observe the following general rules:
1. General guidelines
This chapter presents directions and drawings for...
Hardware Maintenance Manual - Page 53
... or apply any physical shock to physical shock.
b
a
When installing: Insert the notched end of the memory module into place.
Removing and replacing a FRU 47 Press the memory module firmly, and pivot it until it . Improper
handling can cause damage and permanent loss of data. • Before removing the drive, have...
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