I left Debian a while,and Debian give me a black screen despite I pressed keyboard and mouse

新手园地
#1

and when I reboot Debian,I stuck at BIOS Splash,seems like I unplug SanDisk CZ48 usb flash drive problem solved,can you help me figure out what does Sandisk CZ48,Debian,Award BIOS do during I left Debian?

#2

可能与以下组件有关：显卡驱动，桌面环境电源管理器，锁屏工具

强制关机后无法通过自检，可能与主板供电部分品质不佳有关

以上为猜测，不一定准确

#3

maybe my Gigabyte Geforce GTX 650 TI BOOST is bad,I replace it with EVGA GT 740 SC 2GB GDDR5,hope this time problem solve.