LAN disconnects all the time

Hello guys,
This is my first thread and I need help. I´ve searched for a thread matching my problem, but couldn´t find any.

First and foremost, I run Linux as dual boot and have no problem whatsoever with my LAN, nor with the cable or connector. Still, it disconnects on my Windows 7 Home Premium x64 all the time.

My adapter is a Realtek PCIe FE Familly Controller.

What I have already tried:
1. Installed the most current driver for february 2017;
2. Ran all antimalwares I know of: Malwarebytes, Spybot, Superantispyware, IOBit, Advanced System Care, HitmanPro, CCleaner, etc.
3. Uninstalled Zonealarm Firewall and disabled Windows Firewall to discard conflicts;
4. Set my card to 100Mbps Full Duplex mode to make sure my card is keeping up with my modem´s speed.
5. Disabled the option to disconnect idle LAN connections to save energy.
6. Ran Microsoft Security Essentials, Adaware antivirus, Clamav (Linux).
7. Edited the entry "Autodisconnect" at [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\
Parameters] to "ffffff" to make sure it won´t disconnect via registry.
8. Set a fixed IP.

Pretty much I´m out of options at this point. If you guys could help me or point me out some solutions I don´t know of, that would be much appreciated since I can´t format my HD now or anytime soon.

Hello and welcome gaseabra now first up please follow this
Now before we can help we do need to know what is in your machine so please do this System Info - See Your System Specs
or either enter the specs of your system in your forum profile the specs will appear when we click on that little box bottom left of the post screen it is for me the preferable option as it is easy. As you may appreciate it is very hard when you don’t know what one is working with for example a diesel or petrol engine.
*(pretyped to save time)

Plus have you run any sfc or chkdsk scans yet? if not please do so
SFC /SCANNOW Command - System File Checker
Disk Check < if necessary include the /f switch and if this does not make any improvement then just run this switch instead /r in the command line as per Option2
Run these in safe mode and the sfc often best run for two to three runs – you can leave out the /r switch in ckdsk if you feel it not necessary

Now you mention Iobits - it is in my book a no no any of that software is crap to me at least so if you have it on board get rid of it and just check in the reg that it ha no entries at all in Software.

If you want you could try a run with this too
http://support.kaspersky.com/viruses/rescuedisk you will need to make a bootable disk or stick for this and be patient with the site because it can be long winded when clicking on the link

johnhoh said:

then i'm wondering if its a driver conflict when in normal. windows mode. maybe try a Clean Boot, and/or swapping out any devices you can

Did the clean boot, removed most of the services, still my LAN gets disconnected. I´m seriously running out of options and thinking about a format.