Inspiron 5400 Wifi driver error(code 56)

For starters, power AIO off and unplug the power cord from rear of AIO. Press/hold power button for ~30 sec. Reconnect power cord to rear of AIO and boot up. See if WiFi is working now.

If not, open Device Manager and click Action>Show hidden on DM toolbar. Now see if there are any "Unknown" devices listed. If you find any, right click and uninstall. Then -without rebooting- click Action>Scan for hardware changes. See if WiFi works now, and/or after a reboot.

1. Thanks for reply, but first one didnt seem to work.
2. For second solution, I found these:
   1. On Network adapters I saw
      
      • Microsoft Kernel Debug Adapter
      • Microsoft Wi-Fi direct virtual adapter( and a second one named #2)
      • RAS Async apater
      • NDIS Device
      • Andsome WAN Miniports
   2. On Other Devices Menu:
      • Some Bluetooth AREA Devices(Total of 4)
      • BluetoothRfcommServerInsecure(Has 2)
      • And SMS/MMS (Has 2)

That is all I found that seems odd

Do you know what Intel Update was installed? 

You could try doing a System Restore using the last restore point before that update got installed. Personal files won't be affected, but any software updates installed after date of that restore point will need to be reinstalled.

If that doesn't help, you may want to get rid of those two Microsoft Wi-Fi direct virtual adapter entries. Read this.

BTW: Is this the Intel WiFi driver you tried to install?

1st I dont have a system restore point

2nd My computer says This device doesnt support Miracast(But as far as i know it does) Removing those drivers didnt work

I also forgotten to mention there is also a code 56 Bluetooth Device that is called Bluetooth Device(Personality Area Network)

For your 3rd answer it says version 22.150 while broken driver says it is 22.200.2.1

EDIT:Maybe I can find more info on event viewer I will update as soon as i can

WiFi and BT are on same card, so if both are getting a Code 56, it's possible the entire card isn't being seen by BIOS and/or has failed.

Looks like the latest BT driver is here. See if this one installs and that stops the Code 56 at least for BT.

Where does it the driver is "version 22.150", and where does it say "22.200.21 failed"? 

1st  I tried to install, Nothing showed up and it Said installed successfuly

2nd The wifi and The BT driver link You have was 22.150.1.1  (On the file name and installer)WWhile device manager says it is 22.200

When i run your driver installer it says Repair(Bottom Corner) But when i try to install from latest package(22.200) it says Install (Bottom Corner)

When i try to install from  latest package it fails at 50 percent(As log file says)

But when i install it from your driver it says Installation Successful and nothing changes

The Bluetooth works, The driver i mean is in Network adapters.

QUICK Update: I found a system restore point that when i installed drivers

Problem is that the restore point was created after installing the drivers

You said BT also gives you a code 56, so surprising it's working.

Try a Network Reset:
Start>Settings>Network and Internet>Advanced network settings>Network reset
Note: if you're using a VPN, you will have to reconfigure it.

If that doesn't help, try this:

1. At desktop, open a CMD prompt window, Run as administrator
   
   
2. At the prompt, type in: chkdsk c: /r  and press Enter. Accept offer to run chkdsk at next boot and reboot. Be patient because chkdsk will run before Windows loads. See how to find/read the chkdsk log here.
   
   
3. At desktop, open CMD as in step 1.
   
   
4. At the prompt, type in: DISM.exe /Online /Cleanup-image /Restorehealth and press Enter. Be sure to include one space in front of each / and note any error messages when that's done.
   
   
5. Assuming no "unfixed" errors in #2 or #4 , at the CMD prompt, type in: sfc /scannow and press Enter. Be sure to include a space in front of the / and note any errors when that's done.
   
   
6. Assuming no "unfixed" in #2, #4 or #5, reboot and test WiFi again.

trying reset didnt work

Also after doing chkdsk I did get this:

Stage 2: Examining file name linkage ...
10543 reparse records processed. 
1169970 index entries processed. 
Index verification completed.
Phase duration (Index verification): 22.09 seconds.
0 unindexed files scanned. 
Phase duration (Orphan reconnection): 942.43 milliseconds.
0 unindexed files recovered to lost and found. 
Phase duration (Orphan recovery to lost and found): 2.35 seconds.
10543 reparse records processed. 
Phase duration (Reparse point and Object ID verification): 20.78 milliseconds.


(...)

Stage 4: Looking for bad clusters in user file data ...
939248 files processed. 
File data verification completed.
Phase duration (User file recovery): 7.21 minutes.

Stage 5: Looking for bad, free clusters ...
4287972 free clusters processed. 
Free space verification is complete.
Phase duration (Free space recovery): 3.32 seconds.
Correcting errors in the Volume Bitmap.

Windows has made corrections to the file system.
No further action is required

What i should do now

Looks like chkdsk fixed some things so that's good.

Even if you've already run the DISM and sfc commands, run them now that chkdsk fixed things.