Internet problems after reformat. urgently needing help!

[grinch12]

Hello guys! I recently upgraded most of my computer parts and reformatted from windows 7 enterprise 32bit to win7 enterprise 64bit. (all of this happened in a computer shop)

I never had internet problems before the reformat, however it has happened to me before when I had previous
newly reformats on my pc which usually goes away after 2-3 months.

here is the problem, the internet is fine when I start using it and after an hour or two it will disconnect and when I troubleshoot
it, it will just say "DNS server isn't responding" and what I do is turn the modem off and turn it back on and the internet will
come back after 10-20 seconds. so basically my internet is fine and will just go down then to fix it I just have to turn the router
off and on, but it is quite bothering since I work at home and this has been a nuisance.

Additional Info:
my network drivers are up to date.
I used a driver detection software and say that all are updated.
I already installed all win 7 updates.
My modem's name is Zyxel P-660HN-T1A
I have tried openDNS.

any more ways to narrow it down?

 

[grinch12]

additional info: this is my ipconfig /all when my internet is connected.

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\eval>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : eval-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 08-60-6E-75-E4-E8
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::c02f:a85e:aaba:b2b7%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.33(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Linggo, Marso 03, 2013 5:56:59 AM
Lease Expires . . . . . . . . . . : Mierkoles, Marso 06, 2013 5:56:59 AM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 235429998
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-C1-D8-D6-08-60-6E-75-E4-E8

DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{12DF8343-8C61-4E9E-AD6E-AAAC780C615D}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:c37:3a6d:3f57:fede(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::c37:3a6d:3f57:fede%12(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Users\eval>

 

[grinch12]

and this is my ipconfig /all when i randomly disconnect

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\eval>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : eval-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 08-60-6E-75-E4-E8
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::c02f:a85e:aaba:b2b7%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.33(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Linggo, Marso 03, 2013 5:56:59 AM
Lease Expires . . . . . . . . . . : Mierkoles, Marso 06, 2013 5:56:59 AM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 235429998
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-C1-D8-D6-08-60-6E-75-E4-E8

DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{12DF8343-8C61-4E9E-AD6E-AAAC780C615D}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:c37:3a6d:3f57:fede(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::c37:3a6d:3f57:fede%12(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Users\eval>