dell r510服务器开机提示strike F1 to retry boot

服务器型号：dell R510

系统：windows2012

硬盘：8块3T硬盘两块固态。

故障：

服务器开机卡到这个界面 no boot decice available current boor mode is set to bios please ensure compatible bootable media is abailable use the system setup program to change the boot mode as needed 

strike f1 to  retry boot,f2 for system setup,f11 for bios boot manager。后来联系我们云修网的工程师，维修过程中又报错 ，Invalid SAS topology detected.Please check your cable configurations, repair the problem, and restart your system.。经过两个小时的远程维修，系统正常启动，客户非常满意。