20 Most Recent Dell Latitude E6420 PC Notebook Questions & Answers

Function Keys 'Fn'. One is Function Brighter + and one Darker -How do I adjust the brightness on my Dell Latitude laptop?You can press the following keys to adjust display brightness: Press and the up-arrow key to increase brightness on the integrated display only (not on an external monitor). Press and the down-arrow key to decrease brightness on the integrated display only (not on an external monitor).Using the Display: Dell Latitude D630/D630c User's Guidehttp://www.solano.edu/technology100218/data/D630/display.htm#:~:text=You%20can%20press%20the%20following,not%20on%20an%20external%20monitor)...

How to Reset Dell BIOS Password

The solution depends on whether your laptop was made before or after 2004. If it is a post-2004 model, you must call Dell Support to reset the password for you. If it is a pre-2004 model, you can follow these steps: Perform the safety steps in the order below. Warning: these steps are for your personal safety and the protection of the equipment.

Turn off your computer, and then unplug the power cable.
1. Wait 5 seconds.
2. Disconnect all external devices.
3. Disconnect any telephone or network cables from your computer.
4. Press and hold the Power button while your computer is unplugged to dissipate static electricity from the motherboard.
5. Before touching anything inside your computer, ground yourself with a wrist-grounding strap or by touching an unpainted metal surface, such as the metal at the back of your computer. While you work, periodically touch an unpainted metal surface to dissipate static electricity.

To use the jumper to reset the BIOS password

Note: On the Dell Manuals page, download the Setup Guide or Service Manual for your laptop. Then refer to the System Board Components section for a labeled illustration of the jumpers on the motherboard.

1. Ensure that your work surface is flat and clean to prevent scratching your laptop's cover.
2. Remove the battery from your laptop.
3. With your laptop still turned off and unplugged, remove the cover.
4. To locate the password jumper on the motherboard, look for the letters PWD, PSWD or PSWDCLR.
5. Choose an option: If there are 2 metals pins under the jumper
   1. Remove the jumper from the pins, replace the cover, reconnect the power cable and turn on your laptop.
   2. After the Windows logon screen appears, turn off your laptop.
   3. Again, disconnect the power cable. Press and hold the power button for 10 seconds to release static electricity from the system.
   4. Remove the cover.
   5. Replace the jumper in its original position covering the 2 pins. This will re-enable password feature.
   6. Replace the cover.
   7. Reconnect the power cable and other connections, replace the battery and turn on your laptop.
   If there are 3 pins under the jumper
   1. Remembering which two pins are covered, remove the jumper from those pins.
   2. Reinstall the jumper in a different position. For example, if you removed the jumper from pins 2 and 3, reinstall the jumper over pins 1 and 2.
   3. Replace the cover and reconnect the power cable.
   4. Turn on your laptop and wait 5 seconds. Then press and hold the Power button until it turns off again.
   5. Disconnect the power cable again. Press and hold the power button for 10 seconds to release static electricity from the system.
   6. Replace the jumper over the original 2 pins.
   7. Replace the cover.
   8. Reconnect the power cable and other connections, replace the battery and turn on your laptop.
   You can now assign a new system and/or setup password. For more password information, refer to the Passwords section of your laptop's service manual.

You will need to replace the motherboard, there is no way around it. Sounds drastic, but a new motherboard should be relatively afordable. I talked with experts about this same problem and I figured I could order up a new EEProm chip, but they said that would not work. I myself ended up just installing a new motherboard and it was less than $20 us dollars.

Can you clarify the question? If you need software , try here: http://www.dell.com/support/drivers/us/en/04/Product/latitude-e6420

Contact the customer care of your system's manufacturer.

Contact Dell for a one-time BIOS password, that's your only hope.

Install new HDMI audio drivers from Dell web site.

it comes preinstalled with windows 7, what error message are you receiving while attempting install? if you mean it doesn't load the actual OS after booting, what error are you getting? does start up repair attempt to run? If you need further help, reach me via phone at https://www.6ya.com/expert/joel_63c670a84e9f6a97

Eject what a Cd or DvD? If you can't get it to eject by pressing the eject on the drawer, try opening My Computer, then right click on the CD/DvD drive and select Eject. If it still does not eject you will need to straighten out a paper clip, get on your knees and look for a tiny hole on the cd drawer. Stick the paper clip into that tiny hole and push the drawer open.

There are a number of reasons that the unit could be freezing up.

1. Corrupted file(s)
2. Low available disk space
3. Viruses and/or malware
4. Too many add-ons/toolbars/etc.
5. Heat build-up

Number one is the hardest to find. So start with #2. The computer needs free hard drive space to operate. If the disk is nearly full or is very fragmented, this can slow the machine to a crawl. Check for available space and if there is plenty (20GB or more), then check for fragmentation under administrative tools. If the defragmentation tool recommends optimization, allow it to perform it and see if that helps. For viruses and possible malware, run your virus scanner. It is always a good idea to get a second opinion on such things. Malwarebytes is a free malware scanner that works very well to find adware and some things that many antivirus programs fail to detect. Many user feel that they have to have every bell and whistle. I've seen some browsers with 7-10 different toolbar add-ons. These almost always come with some adware and always slow down the browser. Uninstall all but the most essential toolbars for the best performance. Heat is a slayer of machines. Laptops are very susceptible to heat issue since they are often placed on beds, sofas, carpets, and yes, even laptop. Many of these units draw cooling air from the bottom and exhaust it to the side. Even those that draw air from the rear and exhaust to the side will often intake large amounts of dust, grit, and lint. These can partially or completely clog the heat sink unit and cause heat buildup of the processor. This will cause the processor to work slower and can actually cause it to thermally lockup, resulting in the need to reboot. Many units can be accessed to clean with a removable cover on the bottom; others may need to be serviced by a technician to clean.

BIOS admin or windows login/ we can not see your screen sorry can not. sounds like windows log in screens. to me. so reload the OS using he recovery key in your free manual at dell.com

no PC told , at all, model not told ok generic mode. 1: huge battery inside is bad, shorted remove it , even for ever. 2: run on AC power only now. 3: push power button 10 full seconds release, ,runs now? 4: no, remove all USB devices now. run now? 5: no, coin cell battery dead, , replace it , run nolw 6: no. strip the PC down to find the shorted model. lap-strip-101 https://www.pcdied.com/Dead_screens/dead-LT.html

NO if you do, a noob will blow it to kingdom come. as in letting the smoke out. the power-pack does 3 things it has the correct DC voltage and wattages and #2 prevents fire when the PC fails and things short inside. and prevents huge damaging surges landing inside the PC buy used power pack off fleabay and win. i bet I'd mow one lawn and and buy one

dell.com its there 24/7/367, to read any time you want for decades now.. vast model, endless huge, there. on their SERVERS. and echos of them if you learn to GOOGLE.