Lost Network Connection

[crobg]

I have installed several new desktop PC on a Cisco network with 3750 switches. Some PC's are randomally dropping their network connections. It is only with machines purchased this year. I have updated the drivers, replaced patch cords and tested the network lines. I have completely re-installed windows as well. I've had the motherboard and power supply replaced on one machine. There is nothing in the event monitor either. There is not a common NIC that this is happening with or a common PC make/model/processor. I have AMD dual core 64 bit processors and Intel Duo Core 2 processors.

Items in common:
Switch Cisco 3750
Windows XP Pro SP2
Netware Client 4.91 SP4
iPrint Client 4.26+

 

[linney]

What Internet Security program are you using such as anti virus or firewalls?

RDP and Trend Micro
thread779-1113522

RDP dropping on client machines
thread931-1114195

How to troubleshoot network connectivity problems

http://support.microsoft.com/default.aspx?scid=kb;en-us;325487&FR=1&PA=1&SD=HSCH

http://www.windowsnetworking.com/articles_tutorials/trouble/

See the other relevant Forums.

http://www.tek-tips.com/forumsearch.cfm?SearchString=Cisco&type=Forum&sub.x=21&sub.y=5

http://www.tek-tips.com/threadminder.cfm?pid=931