Weird networking issue with windows 7

I have a windows 7 machine that about every 30 minutes or so will lose network connectivity to the internet. I have a monitor set up to ping every 5 minutes and this ping fails about twice an hour. The weird thing is that I have a centOS vmware guest on the same machine and that image experiences no networking outtages. Even during the periods where I can't ping google from the host, I can still access the internet from the guest.

I also have other physical machines on the network connected to the same router that have no issues. During the outtages, I can still ping the router from the affected machine.  The firewall and anti virus are completely disabled on the host.

I'm totally stumped by this so any troubleshooting suggestions would be much appreciated.
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Try to uninstall/reinstall the host network card drivers from Device Manager.
To reinstall the driver, make sure that you download the most recent driver from the manufacturer's site. (do this BEFORE you start your reinstall process)
It won't hurt to update your router's firmware to the latest if you have not done this yet

Check for conflicting software which would complete for the network.  For example, aircard connectivity software, modem, wireless, etc.

First try these to clear corruption and repair/replace damaged/missing system files.

Run DiskCleanup - Start - All Programs - Accessories - System Tools - Disk Cleanup

Start - type in Search box -  COMMAND   find at top of list -  RIGHT CLICK  -  RUN AS ADMIN

sfc /scannow

you can reset your Network stack by doing the following:

Start - in search box type ->    command

at top of list find COMMAND - RIGHT CLICK on it - RUN AS ADMIN

Type the following commands (or copy and paste one at a time), each followed by pressing enter.

ipconfig /flushdns

nbtstat -R

nbtstat -RR

netsh int reset all

netsh int ip reset

netsh winsock reset


opikeAuthor Commented:
I reinstalled the network adapter driver and also upgraded vmware workstation to 7.1.4 and the problem appears to have gone away.
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