Can no longer connect to the internet on my host pc

[Cobalt]

Hi all, I installed Virtual Box and tried to get ubuntu to work but it kept giving me the "This kernel requires an x86-64 CPU, but only detected an i686 CPU" error - which is odd because I have an i5-3570k. Anyways, after looking around for a while someone said I had to go into by BIOS and enable Intel Virtualization Technology. I restarted my comp and searched around in my BIOS but found no such option. When I booted back into windows I noticed I couldn't connect to the internet, also when my internet window popped up, instead of just having the usual "network adapter - local connection 4" there was now a new adapter/network listed under that "Virtual box host network only" or something of that nature. I messed around w/ disabling and re-enabling the adapter, I restarted my PC, I disabled the virtual box network -- nothing worked. Finally I gave up and uninstalled virtual box. To my horror the internet still did not work. I unplugged and replugged the wall cable in but it didn't even detect a connection. My motherboard happens to have two LAN ports and the Intel one is still working (even though it still says "Network 4 - no internet access") but the Broadcom adapter doesn't work at all anymore. Help would be much appreciated.

Thank you

details:
Running Windows 7 64bit
On a school network
hardwire connection

Let me know if more information is needed.

[noteirak]

Is the Virtual box host network only still present even after uninstalling Virtualbox?

[Cobalt]

Stupid mistake. One of my network adapters had been disabled somehow (in my defense there are about 6 of them ). I swear I had combed through that multiple times though

Sorry about that. I reinstalled VB and everything seems to be working (except Ubuntu).

Thank you for the reply though, I really appreciate it

[Cobalt]

Same thing is happening again. Everything was working fine, I left for class, came back -- no internet. I tried enabling disabling all adapters, I tried enabling some while disabling others, I tried brigding networks etc. The only way I got it to work was by disabling all networks except for my Intel adapter and unchecking the box that allows the Intel adapter to use "VirtualBox Bridged Networking Driver"

[Cobalt]

Just got my internet back, it hasn't been working all day, even with the same settings that seemed to work last time. Like I said, it's working at the moment but I know it will stop working soon. I changed nothing, I woke my computer up from sleep and now it's working. Granted my network icon still has a yellow triangle and notifies me that I have "No internet access" and below that I have an "Unidentified Network" similarly with "No internet access".
Also I should note that I don't have any guest machines set up at the moment. I have an empty one that I was going to install Ubuntu on but I haven't touched it.
Help would be much appreciated.

[mpack]

Are you sure your problem was local? It sounds like a dead DNS to me - a problem at your providers end.

[Cobalt]

It's definitely being caused by virtualbox. Never had any problems with the internet until I installed VB, then it stopped working. I uninstalled VB and the internet went back to working. I reinstalled it, and my internet is having problems again.

Are there certain setting that I should be checking?

I'm on a university network if that helps at all - not sure how much that changes things.

[noteirak]

Open a command prompt (also known as cmd) and post back the result of this command when your internet is not working as you describe it :

Code: Select all

route print