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Optiplex 790 lan driver error
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
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June 29th, 2020 00:00
790 network is generic
you have rootkit malware and winsock virus
Rex404
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June 29th, 2020 03:00
Thanks for the reply. I start scanning for it but there was no threat found. I use windows defender and malwarebytes.
speedstep
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June 29th, 2020 03:00
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
7 Posts
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June 29th, 2020 04:00
Oh i see. I'll try it and tell you what will happen
Rex404
7 Posts
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June 29th, 2020 09:00
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
7 Posts
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June 30th, 2020 02:00
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
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June 30th, 2020 02:00
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
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June 30th, 2020 02:00
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
7 Posts
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June 30th, 2020 06:00
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
7 Posts
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June 30th, 2020 21:00
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
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June 30th, 2020 22:00
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