Win2003 server system problem

A Lenovo old server, Wanquan 1060 (should have friends know this model), the original installation 2000, after an ARP attack, the system has an error, can not start properly!

After repeated restarts, you can self-test, after the self-test, the network card error is prompted, and you cannot advance, thinking that the network card is damaged. Remove the network card and still not work properly. I think that the system was smashed, and the 2000 system disk was reinstalled. The three installation disks could not be installed normally.

No, refit the 2003 server version, all the way smoothly, complete the installation. Prompt to restart.

Strange things appear, after rebooting, the system prompts "boot from ATAPI CDROM:" after three seconds, prompts “press any key to start from cdrom ”, hit any key, then prompt the network card error, Cannot start normally.

Please pay attention to the situation at this time, then I have removed the installation CD from the CD-ROM drive. Seeing that the restart failed, I thought that the installation was not complete, so I put it back into the CD and restarted it. The prompt just appeared, but I didn't press any button, that is, I entered 2003 normally after two seconds. After entering, everything is normal. Shut down, restart, this time still put in the disc, and then when prompted to hit any key to enter, hit any key, an error occurs, can not start normally.

Shut down, restart, the disc is still there, when prompted to hit any key, do not move, enter normally.

For the third time, I took a CD (not the 2003 installation disk) and put it into the CD-ROM drive. The result is normal (no keystrokes). Now you must put a CD in each boot to enter 2003. I used the 2003 server for the first time and I don't know if this is normal. If it is not normal, this may be the strange thing I have encountered for the first time in my work for so many years. I don't know what you think, so please discuss!

Add a bit, after booting with the CD, the network card does not prompt an error, and can usually go online, the speed is not too slow! Also, the boot order has been changed to the hard disk boot in the BIOS, but it still prompts to boot from the CD when booting.