Optiplex 790 lan driver error

Question

I got the optiplex 790 from a friend, everything is working except for the internet, tried uninstalling the driver then restart the sysyem it doesn't work, tried installing the driver from dell and intel site still not working there is an error saying windows encountered an error, tried updated the bios to the lastest still not working, tried disabling and enabling it still doesn't work, and also fresh install the windows and still not working. Please help !!!!

speedstep · Answer

790 network is generic

you have rootkit malware and winsock virus

Arch	Category	Description
x64	Audio	Realtek ALC269 HD Audio
x64	Chipset	NEC USB3.0 xHCI
x64	Chipset	Intel Management Engin e 7.0 Components for 5 MB
x64	Chipset	Intel Chipset
x64	Communication	Foxconn Serial/Paralle l port PCIE add-in-car d Driver
x64	Dell Data Protection	Dell Data Protection \| Access
x64	Input	Dell Smartcard USB Key board
x64	Network	Wireless 1520 802.11n MiniCard WLAN for Desk tops;Wireless 1520 802 .11n PCIe WLAN for Des ktops
x64	Network	Broadcom BCM95722 PCI- E NIC
x64	Network	Intel 825xx 10/100/100 0 Ethernet controller; Intel Ethernet Connect ion I2XX;Intel I2xx/82 5xx Gigabit Platform L AN Network Device;Inte l I2xx/825xx Gigabit E thernet Controller;
x64	Security	This is the UPEK Windo ws Biometric Framework (WBF) Driver supporti ng UPEK External USB F ingerprint Reader devi ces attached to system s with Windows 7 Opera ting Systems.
x64	Storage	Intel Rapid Storage Te chnology (Pre-OS Insta ll);Intel Rapid Storag e Technology
x64	Video	AMD Radeon HD6450(1G D DR3);AMD Radeon HD6450 (1G DDR3).
x64	Video	Intel HD Graphics 2000 /3000;Intel HD Graphic s 2000/3000/4000;Intel HD Graphics 4000;Inte l HD Graphics 2000/250 0/3000/4000;Intel HD, HD 2000/2500/3000/4000
x64	Video	AMD Radeon HD6450(1G D DR3);AMD Radeon HD6350 (512M DDR3).;AMD Radeo n HD6450(1G DDR3).
x86	Audio	Realtek ALC269 HD Audio
x86	Chipset	NEC USB3.0 xHCI
x86	Chipset	Intel Management Engin e 7.0 Components for 5 MB
x86	Chipset	Intel Chipset
x86	Communication	Foxconn Serial/Paralle l port PCIE add-in-car d Driver
x86	Dell Data Protection	Dell Data Protection \| Access
x86	Input	Dell Smartcard USB Key board
x86	Network	Broadcom BCM95722 PCI- E NIC
x86	Network	Wireless 1520 802.11n MiniCard WLAN for Desk tops;Wireless 1520 802 .11n PCIe WLAN for Des ktops
x86	Network	Intel 825xx 10/100/100 0 Ethernet controller; Intel Ethernet Connect ion I2XX;Intel I2xx/82 5xx Gigabit Platform L AN Network Device;Inte l I2xx/825xx Gigabit E thernet Controller;
x86	Security	This is the UPEK Windo ws Biometric Framework (WBF) Driver supporti ng UPEK External USB F ingerprint Reader devi ces attached to system s with Windows 7 Opera ting Systems.
x86	Storage	Intel Rapid Storage Te chnology (Pre-OS Insta ll);Intel Rapid Storag e Technology
x86	Video	Intel HD Graphics 2000 /3000;Intel HD Graphic s 2000/3000/4000;Intel HD Graphics 4000;Inte l HD Graphics 2000/250 0/3000/4000;Intel HD, HD 2000/2500/3000/4000
x86	Video	AMD Radeon HD6450(1G D DR3);AMD Radeon HD6450 (1G DDR3).
x86	Video	AMD Radeon HD6450(1G D DR3);AMD Radeon HD6350 (512M DDR3).;AMD Radeo n HD6450(1G DDR3).

Rex404 · Answer

Thanks for the reply. I start scanning for it but there was no threat found. I use windows defender and malwarebytes.

speedstep · Answer

Clean install with the driver cab file and its working.

Having defender and malware bytes means nothing.

If it did there would be no reason to update signatures every hour.

there are several rootkits out there right now that specifically target Malwarebytes' and Defender and prevent removal.

clean install on an unifected drive will likely work immediately.

Rex404 · Answer

Oh i see. I'll try it and tell you what will happen

Rex404 · Answer

Hey I'm back still doesn't work. Tried fresh install windows and use the cab drivers still doesn't work. Tried also using a different drive still it doesn't work. I followed this step https://www.dell.com/support/article/en-ph/sln209380/how-to-configure-driver-installation-from-cab-file-s-in-windows-vista-7-8-and-windows-server-2008-2012?lang=en

And this one too https://www.dell.com/community/Enterprise-Client/Is-it-possible-to-install-these-CAB-driver-packages-manually/td-p/4175839

When installing the cab drivers.

Rex404 · Answer

Is using a network card will work ? Because I'm thinking of getting one if the onboard lan don't work anymore but I think it will not work either because I got this gt430 the fans spins but when I plug the vga there it doesn't display anything. I know that the network and graphics card doesn't use the same pci slot. That is why i'm still thinking of getting a network card the 790 I have is a MT.

speedstep · Answer

use the cab drivers is not a water chicken install.

You cannot point to a cab file and have drivers installed.

There are no win10 drivers for the 790.

what you do is clean install

then download the win7 cab file.

https://downloads.dell.com/FOLDER01834206M/1/790-win7-A08-34RKD.CAB

then install 7 zip

https://www.7-zip.org/download.html

then move the cab file to MY documents folder

Once there you right click on the cab file with 7zip and say EXTRACT here.

Then you go into device manager and tell it to scan for new hardware and update drivers FROM MY PC not from the internet.

speedstep · Answer

75w card isnt supported with the stock tower power supply.

Use onboard vga to clean install and install all the drivers.

Recommended card for this model is 40W GT1030 LOW PROFILE from MSI

https://www.dell.com/en-us/work/shop/accessories/apd/aa362018

The official DELL GT1030 is 8CCF1

(this is not necessary but it does work)

https://www.ebay.com/itm/8CCF1-Dell-Geforce-GT-1030-2GB-High-Profile-Graphics-Card/312756233837

If you want to use VGA monitor with GT1030 you will need HDMI to VGA adapter.

https://www.amazon.com/ICZI-Gold-Plated-Adapter-Projector-Compatible/dp/B07H2GTR16

EASIEST network is USB WIFI.

https://www.amazon.com/ICZI-Gold-Plated-Adapter-Projector-Compatible/dp/B07H2GTR16

If the GT1030 seems too expensive then I recommend a Radeon HD 5450 passively cooled silent card.

https://www.amazon.com/VisionTek-Radeon-5450-DVI-I-Graphics/dp/B01CN1F1ZM/

Rex404 · Answer

Just did what you said still doesn't work. I think I'll just get a network card. I'm thibking this one https://www.amazon.com/TP-Link-1000Mbps-Gigabit-Ethernet-supported/dp/B003CFATNI/ref=mp_s_a_1_3?dchild=1&keywords=tp+link+tg-3468&qid=1593517684&sprefix=tp+link+tg&sr=8-3

And also maybe get a 450watt PSU

Rex404 · Answer

I got the radeon hd 5450 when the pc was given to me but when I plugged the vga there it doesn't display anything.

speedstep · Answer

zero issues with working 5450 and dell.

790 does not allow you to use a card and onboard at the same time.

Windows 10 will consider this model to be legacy so you will have to manually install drivers for it.

https://www.amd.com/en/support/graphics/amd-radeon-hd/ati-radeon-hd-5000-series/ati-radeon-hd-5450

optiplex790eus · Answer

after bios update revision A22. the nic is disabled. enacle it, your system know the the networkcard. enjoy!

DifKotka · Answer

I downloaded bios A05, A10, A15, A18 and A22. Firstly downgrade bios to A05, if you are on A20 first downgrade A15 => A10 => A05 then go to A10 => A15 => A18, Bios A18 should fix LAN problem on Windows 10 64bit, then you can go to the latest A22 firmware. I had this problem on 2 machines and solved it that way. Good luck!

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