Ethernet Ports Not working/detected but lights are constantly on.

[DoseAu]

*Before I posted this same thread in Motherboard section because I'm unsure where to post it, so I'll post it here. LINK TO OTHER THEAD: HERE *

ave been having issues with my Ethernet Ports (Yes I have 2). About 2 weeks ago I thought I would be a genius and give my computer a clean. So I used a can of compressed air and held it up straight to make sure non of the nitrogen or whatever liquid is in the can does not come out and only air. I disassembled my PC to get in the nooks and crannies. When I put it back together my LAN port(s) were not working, so I thought oh well, I'll just go through the whole, Uninstall Driver/Re-Install driver process to no avail.

I finally tested a New OS and to my surprise it worked! so I upgraded from my then OS (windows 7) to the new OS (Windows 8.1) everything was going smoothly until about 2 days ago. My computer decided to install 100 and something updates (None are listed in the update history so I can't tell you what they were.). I turned my computer on in the morning before I went out for the day and left my computer running. I came back to find my computer black screened (Like as if the GFX card crashed) so I restarted my computer to find out the internet no longer works.

I tried installing the drivers from ASRock (My MoBo provider), then tried installing the drivers from Broadcom (Ethernet provider) for the correct lan chipset (BCM57781). None of those worked. I tried restoring to a point before the updates. That didn't work. Tried using the b57udiag utility provided by broadcom and it said no devices found (Or something along those lines) but the main puzzling thing is the BIOS says that both ports are "connected" I'm assuming that it means connected to my board and detected. The lights are constant showing a Green Power and a Orange Speed/Traffic light which blinks every now and then. But no internet nor detection of the re-installed drivers.

If you need anymore details please let me know.


My specs are:
Fujistu 256GB SSD
Seagate 2TB HDD
16GB Corsair Vengeance 1333MHZ High Profile RAM
i5-3570k
Antec HCG 750W PSU
AsRock Fatal1ty Z77Professional
CAT 6 TIA/EIA 568-B2.1 patch cable

ISP provided 4port modem

Side-note(s):
I have tried plugging the Ethernet cable into my laptop and it works.
I have tried changing the port that the cable is plugged into.
I have tried using the device manager to scan for hardware changes apparently there are none
Checked the Event Viewer for something (was hoping it could be a driver problem displayed)
Tried using a different cable - no success.
Currently using my HTC android device USB tethering using the RNDIS provided via microsoft.
Willing to purchase a cheap but decent PCI/PCIe Ethernet NIC/Network Card.

 

[REALIllusion]

get them directly from the AsRock website

 

[DoseAu]

Yeah I tried that again, the drivers the Broadcom site provides is 15.6.0.10 and the ones from the ASRock website is Broadcom_Lan v16.2.4.1

Restarted after uninstallation and installations, still nothing.

 

[REALIllusion]

sometimes, windows installs a completely different driver for hardware.
check this for possible answers
http://windows.microsoft.com/en-ph/windows/update-driver-hardware-isnt-working-properly#update-driver-hardware-isnt-working-properly=windows-7

 

[DoseAu]

I noticed that it says for windows 7 will that also work for windows 8.1 (I updated from win7 first time round this happened, when I went to 8.1 the problem was fixed but then started happening after windows installed a bunch of updates)

UPDATE : I'm going to try removing the CMOS battery for a couple of hours or so too see if that worked, I noticed on some threads this works.

UPDATE: Okay, Well I tried that and it didn't work. I also tried removing the SSD (C: Drive) from my laptop and replace my computer's SSD with it and it also didn't pick up the SSD. So I'm starting to wonder maybe it's not the ports since the lights come up and the bios says connected with 1000 speed but both SSDs both running Windows 8.1 says it doesn't work. How do I tell if the chip is damaged? There's no visible damage on or near the chip on the motherboard. Haven't been able to get a good look at the back though.

 

[DoseAu]

I bought a D-Link Ethernet to USB3 adapter to use while I save up for a decent network card. Today (roughly 2 days after buying the adapter) Windows decides to execute an update which after the update restart my onboard-lan started working again. Not sure what happened but so far its working again.