Lenovo ThinkPad T420 Notebook - Answered Questions & Fixed issues


The cmos battery is just under the keyboard. Release screw (1) of the keyboard is beside the ram slots underneath. So remove the ram cover first. Good luck!

Lenovo ThinkPad... | Answered on Sep 28, 2017 | 292 views


Looks like the address of the memory with issues. Try a new RAM stick and run the test again.

Lenovo ThinkPad... | Answered on Oct 04, 2015 | 372 views


Can you plug a monitor into the external Video connector, and do you see a display there? If you see a display on the external monitor, then the LCD is most likely bad.

Lenovo ThinkPad... | Answered on May 10, 2015 | 107 views


Which test do you mean?

Lenovo ThinkPad... | Answered on Jan 02, 2015 | 80 views


Try to restart the computer. Lenovo computers can be glitchy a lot, and restarting seems to help. If it's a touch screen, the computer can be "confused" on which mode of input you're using.

Lenovo ThinkPad... | Answered on Dec 20, 2014 | 119 views


I have come across this error before. Try this link;
http://support.microsoft.com/kb/213360
How to convert numeric value into English words in Excel

Lenovo ThinkPad... | Answered on Sep 20, 2014 | 351 views


Keyboard Error

Lenovo ThinkPad... | Answered on Sep 08, 2014 | 39 views


Is it problem accours in another monitor that pluged to your notebook? If no, the possibility is inverter failure. Try to replace the inverter to your service centre

Lenovo ThinkPad... | Answered on Sep 06, 2014 | 79 views


There should be a function key to adjust the brightness at the top of your keyboard my laptop is F2 or F3 so at the bottom of the keyboard is a key label FN The Function key looks like a sun with an arrow if you are lucky to have it labelled.
If this does not fix problem you may have a faulty laptop . There is a circuit called an inverter in your laptop that converts DC to a higher voltage AC to run the fluro backlight behind your laptop's LCD screen. If this inverter goes faulty you could experience the symptoms you are seeing. This would require a replacement of the inverter circuit board in your laptop by a repair service centre.
http://www.youtube.com/watch?v=fSCJzA0EBo0
http://www.youtube.com/watch?v=2Yi6GNFcP3w
http://ask.metafilter.com/92210/Backlight-or-Inverter-How-can-you-tell

Lenovo ThinkPad... | Answered on Sep 05, 2014 | 325 views


The problem is probably at your TFT/LCD panel. Find to know by connecting your Notebook to another monitor is it dimming or not

Lenovo ThinkPad... | Answered on Sep 05, 2014 | 101 views


you might find answers on lenovo forums

Lenovo ThinkPad... | Answered on Aug 31, 2014 | 40 views


What version of windows are you running?Check out tutorials on youtube for you Windows version.

Lenovo ThinkPad... | Answered on Aug 31, 2014 | 258 views


Try these steps might your computer is infected.

Step Followed:-

1. Click on start and type Run.
2. In Run box type Temp.
3. Select all and delete all files.
4. Follow 1st step and type %temp% and then follow 3rd step.
5. Follow 1st step and type prefetch and then follow 3rd step.
6. Follow 1st step and type appwiz.cpl (add and remove programs)
7. Remove unwanted software and all antivirus .
8. Restart the computer.
9. Download Malwarebytes from "http://www.filehippo.com/download_malwarebytes_anti_malware/download/d7670bee6c8cd1bb9341d9a1ffbe832f/ "
10.Scan your computer and remove the infection.

Thanks

Lenovo ThinkPad... | Answered on Apr 05, 2014 | 110 views


BSOD = BLUE SCREEN OF DEATH

This is mainly due to a driver issue, application error or worst hardware issue. Click below for more info.
How To Fix Blue Screen of Death BSOD

Lenovo ThinkPad... | Answered on Mar 27, 2014 | 66 views


Possibly a faulty screen. If it is, replace the screen.

Lenovo ThinkPad... | Answered on Feb 02, 2014 | 131 views


What is the problem?

Lenovo ThinkPad... | Answered on Dec 01, 2013 | 42 views

Not finding what you are looking for?
Lenovo ThinkPad T420 Notebook Logo

87 questions posted

Ask a Question

Usually answered in minutes!

Top Lenovo Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18429 Answers

Alun Cox

Level 3 Expert

2679 Answers

Ekse

Level 3 Expert

13434 Answers

Are you a Lenovo Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...