Problem of conectivity to other system after installing Linux

[mm786r]

I had a window pc and it was working fine on network. I unplug the HDD and place a new HDD in that PC and installed Linux A S 3 on this pc. Installation was OK but after installation the only problem is that this system is not pinging to gate address or any other pc's on same network. Where as if I again use the old HDD of window, system networking again ok and I can ping other PC's from this system. Please advise me to resolve my this problem.

[sanjeevt]

May be your network card was not detected or did not setup on-boot.

Try

service network restart

this will bring-up network card if its install properly

then to make it auto-load, you can try the command

chkconfig network on

this will be required to run only once, this will make it auto-load

[mm786r]

Dear Sanjeevt, thank you for your repy, I tried these command. These executed properly,network service also restarted but still system do not ping gate way or any other pc's on the network.