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Hardware Version :

Firmware Version :

ISP :

Hello , first i want to apologize if i post in a wrong thread , secondly my english isn't that good so i'll do some mistakes

I'm a owner of a Archer C2 ( Firmware Version:0.9.1 5.0 v0032.0 Build 170207 Rel.49213n [B]Hardware Version:Archer C2 v1 00000002 ) ,[/B]and i have ethernet from local network supplier with a 1000Mbps on fiber .
About a mounth ago , my speed test fall to 100mbps each time but only on my PC . Other gigabyte devices in my home work perfectly at full speed . I assume that it's because of upgrading my OS version from windows 7 to windows 10 , because in that time my network speed lose horsepowers . After some research i found that ethernet driver for my board isn't supporting windows 10 at all , and they did a conversion of a windows 8 driver for 10 , anyway , i'm back to windows 7 , back to my driver , but isn't working the same .
When i check my network adapters properties it say 1 Gbps but when i go to Advance / Speed & Duplex it only show from 10 to 100 Mbps Half or Full Duplex , but not 1000 Mbps .
I tried a lot of things like unninstaling / installing , reinstalling , remove any version and kind of software ; i re-re-re-reconfigure my modem ; i tried to change energy saving settings to disable for not limit my speed but no chance .
Please , if you could suggest another thing to try , i'll do .
Best regards , Mike

P.S I will let my network - pc configuration

LAN MAC Address:F4:F2:6D:38:22:5D
[B]IP Address:192.168.0.1[/B]
[B][B]Subnet Mask:255.255.255.0[/B][/B]



[B][B][B]Wireless 2.4GHz[/B][/B][/B]
[B][B][B]Wireless Radio:Enabled[/B][/B][/B]
[B][B][B][B]Name(SSID):Parter[/B][/B][/B][/B]
[B][B][B][B][B]Mode:11bgn mixed[/B][/B][/B][/B][/B]
[B][B][B][B][B][B]Channel:Auto(Channel 1)[/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B]Channel Width:Auto[/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B]MAC Address:F4:F2:6D:38:22:5D[/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B]WDS Status:Disabled[/B][/B][/B][/B][/B][/B][/B][/B][/B]



[B][B][B][B][B][B][B][B][B][B]Wireless 5GHz[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B]Wireless Radio:Disabled[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B]Name(SSID):TP-LINK_225D_5G[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B]Mode:11a/n/ac mixed[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B][B]Channel:Auto(Channel 36)[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B][B][B]Channel Width:Auto[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B][B][B][B]MAC Address:F4:F2:6D:38:22:5C[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B]WDS Status:Disabled[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]




[B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B]WAN[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B]MAC Address:F4:F2:6D:38:22:5E[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B]IP Address:192.168.100.4(Dynamic IP)[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B]Subnet Mask:255.255.255.0[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B]Default Gateway:192.168.100.1[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]
[B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B]DNS Server:192.168.100.1 0.0.0.0[/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]





[B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B][B]System Up Time:5 day(s) 10:16:38 [/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B][/B]

OS : WINDOWS 7 Enterprise Service Pack 1
Motherboard : Asrock FM2A88x Extreme4+ with Lan Qualcomm Atheros AR8171
CPU : AMD A10 7700 3.4 Ghz
RAM : 8 GB
STORAGE : Intel SSD SC2BW 120A4 *primary
Western Digital WD5003AZEX-00MK2A0