I have to install Windows 2008 Server (64-bit) on a Notebook with several Virtual Machines. Which Dell Notebook supports this Installation and what did I also have to regard for?

Most newer models will support virtualization. If they do, there is usually an option in the BIOS to enable the technology to be able to setup a Hyper-V or VM on the box.

I have a Dell Inspiron N5010, have installed Windows 2008 server (64-bit). at the time of adding Hyper V it asks to enable virtulization which i have already did, so i disabled it to add hyper v, now when am trying to run VM from hyper V it gives an error that need virtulization need to be enabled.

After enabling virtulization from BIOS a blue screen come up dumping memory and i cannot get to the login screen of Windows 2008 server. Any idea how to solve this problem?

Go back into the BIOS and enable the option. The warning box is a default window that pops up notifying the user virtualization is only supported on models that can handle it.