前几天在dell笔记本上安装了Centos 7，然而有时候刚开机到登录界面或者刚进入bash，笔记本就突然像断电似的，突然黑屏死机。之后也无法重启（一按电源键马上就断电死机），只能把所有接口（电源线，usb,网线）拔了，才能启动。
本来想用centos作桌面的，现在弄得总突然死机，硬盘也伤的很，挺恼怒地。
请各路大神帮小弟看一看那地方出错了（度娘后个人怀疑可能是电源或者显卡问题）
笔记本配置如下： DEll 5568
intel CORE i5 7th ,4G内存 ,双硬盘, 2GN卡，uefi启动模式。
然后**_abrt-cli list 显示Problems如下_**：
id dce75e5ec952c7757594d9394f945a823ded03a9
reason: mce: [Hardware Error]: Machine check events logged
time: Sun 02 Apr 2017 01:22:02 PM CST
cmdline: BOOT_IMAGE=/vmlinuz-0-rescue-599510e62cac4f08b17a1c4055ae37e1 root=UUID=f8697ca6-51fb-489b-a4d3-02ec2c810886 ro rhgb quiet
uid: 0
Directory: /var/spool/abrt/oops-2017-04-02-13:22:02-1026-0
/var/log/message的一部分bug（在13：22多突然死机）：
Apr 2 13:22:12 localhost dbus-daemon: dbus[999]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.45" (uid=42 pid=1819 comm="gnome-shell --mode=gdm ") interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" error name="(unset)" requested_reply="0" destination=":1.4" (uid=0 pid=1010 comm="/usr/libexec/bluetooth/bluetoothd ")
Apr 2 13:22:12 localhost dbus[999]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.45" (uid=42 pid=1819 comm="gnome-shell --mode=gdm ") interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" error name="(unset)" requested_reply="0" destination=":1.4" (uid=0 pid=1010 comm="/usr/libexec/bluetooth/bluetoothd ")
还有几个bug，这四个errors几乎刷屏：
Apr 2 13:19:47 localhost firefox.desktop: (plugin-container:3512): Gdk-CRITICAL **: IA__gdk_colormap_alloc_colors: assertion 'GDK_IS_COLORMAP (colormap)' failed
Apr 2 13:19:47 localhost firefox.desktop: (plugin-container:3512): Gtk-CRITICAL **: IA__gtk_widget_modify_bg: assertion 'GTK_IS_WIDGET (widget)' failed
Apr 2 13:19:48 localhost firefox.desktop: (plugin-container:3512): Gtk-CRITICAL **: IA__gtk_widget_get_visual: assertion 'GTK_IS_WIDGET (widget)' failed
Apr 2 13:19:48 localhost firefox.desktop: (plugin-container:3512): Gdk-CRITICAL **: IA__gdk_colormap_new: assertion 'GDK_IS_VISUAL (visual)' failed
message里主要是上面的错误信息。
小弟linux刚入坑几个月，看不懂，请大侠多多指教。解决这个问题。
