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Jason JohanknechtFlag for United States of America

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Dell Latitude E5520 with wireless issues (Not a disconnection issue).

Latitude E5520 with clean install of Windows 10 Pro v1809 onto brand new HDD.  Everything works great, except the wireless adapter after a short period of time will show the exclamation mark and it will not communicate with anything.  The troubleshoot fails to resolve anything, the drivers are all updated, BIOS included, and Windows updates are current as of this writing.  No AV is installed yet, as testing is being done first to prove the laptop is still viable option for the business client.  He did not have any wireless problems before, just very slow.  Old HDD was in failed state (SMART) and data was recovered only.  The data hasn't even been restored yet, until laptop passes all tests in Windows.  It has nothing to do with power options, since the laptop doesn't even have to go to screen saver to fail on wireless.  The WiFi connection never drops.  Disconnecting and reconnecting will solve only temporarily.  WLAN is Dell 1501.  The laptop doesn't have any verified drivers for Windows 10 (Dell).  Appreciate any thoughts.
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Jason Johanknecht
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I am testing the W8 drivers now.
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Jackie Man
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You can try a Windows 10 Repair Install

https://www.microsoft.com/en-us/software-download/windows10

Windows 10 is running, so click on the Download button (not Upgrade Button, select Save.
Create a USB Windows Installation key and then run Setup on the USB Key.
This will launch the Repair and proceed normally.

If that does not work, contact Dell Support and ask them if they can supply a workable Wireless Card and also to confirm the story above that the machine is end of life.
Same problem.  I do have turn off to save power disabled.  The WiFi still shows as connected with all drivers.
As noted, contact Dell Support.
John, please note... this is a brand new drive with a clean OS install.  Problem from first minute.  LAN works fine.
John, please note... Dell "We will not support a 7 year old out of warranty laptop."
LAN cards (usually part of motherboard) are very stable, few driver needs and built in. Wireless cards are different
Yup - probably too old to keep it going.
Dropping the project based on Jackie Man note of no longer supported beyond v1709.
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Member_2_231077

Surely there is a half height mini PCIe card that's compatible with the latest version of Windows 10 you can buy?
That is actually a great idea.  The client has already ordered a new laptop to replace this one based on age.  It is over 7 years old, and they don't want to stick more money into it at this point.
Laptop was replaced, but I decided to pursue further for my purpose...

New Intel 7260 wireless card was installed.  Same problems.  Clean OS install and same problem.  Started with a 2nd new HDD and clean OS install, same problem.  Installed Windows 7 and all drivers... Same problem!  So it has to be a hardware problem with the motherboard, and not a driver related issue.  Even tried yet another wireless card, same problem.  The used one was known good, and the 7260 is brand new.