Esxi seems unresponsive

We have a stand alone ESXi4.1 host. All of  a sudden the ESXi host failed to ping. When logged through ILO and rebooted the host. After rebooting the host in the console I find
"Network adapter is not compatible kindly check with VMware Hardware compatablity list" and replace. The ESXi is unable to ping even after the reboot.
I just like to know how all of a sudden the Network adapter becomes uncompatible after being worked for so many days?
Need to know how to resolve this issue? Thanks
jmohan0302Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
what is the network interface?

what is the server, is it on the HCL?

have you checked the physical network connection? have you replaced the network patch cable?

what speed have you set the port to?

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
cdjcCommented:
Failed network adapter, or has come loose in the PCI(e) slot possibly.

If it's not an on-board NIC, try reseating it, if that doesn't work or if it's on-board, replace it or the mainboard.

If you're not comfortable doing any of that, boot the host from Live Linux disc of some sort, and test the network connection from there.  If it still doesn't work, start looking at faulty hardware.
jmohan0302Author Commented:
Got resolved
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
VMware

From novice to tech pro — start learning today.