求救.....PXE79错误

我用3COM 软件时服务端在启动时出现了这句话…
客户端用:Litenet
之前还不会的哦就是好像改动了共享名字和客户端的计算机名之后就这样子

NBP is too big to fit in free base memory

还有一次出现了98画面之后就有三声报警…
出现了错误:

ERROR 53 :The computer name specified in the network
path comnot be located. Make sure you are specifying the computer name corretly ,or try again later when the remote
computer is available.

Couldn’t open c:\windows\qnetnm.drv(read mode)

希望各位大侠能帮帮忙