[求助] 这下完了

zrsang

昨天还能偶尔启动成功，今天彻底玩完了。启动无数遍，提示：
Broadcom UNDI PXE-2.1 v7.7.5
Copyright (c) 2000-2004 Broadcom Corporation
Copyright (c) 1997-2000 Intel Corporation
All rights reserved.

Broadcom Base Code PXE-2.1 v1.0.1
Copyright (c) 2000-2004 Broadcom Corporation
Copyright (c) 1997-2000 Intel Corporation
PXE-E61: Media test failure, check cable
PXE-MOF: Exiting Broadcom PEX ROM.
Operating System not found