为什么电脑屏幕突然熄灭，过一会儿又亮了？

反复了俩三次后，就跳出一个蓝色的界面，上面全是英文：A problem has been betected and windows has been shut down to prevent damage to your computer .The problem seems to be caused by the following file : nv4_dispIf this is the first time you've seen this stop error screen ,restart your computer.If this screen appears again,follow these steps :The device driver got stuck in an infinite loop. This usually indicates problem with the device itself or with the device driver programming the hardware incorrectly.Please check with your hardware device vendor for any driver updates .Technical information:***STOP:0x000000EA (0x81922020,0x81B253D8,0xF88E6CB4,0x00000001)nv4_dispBeginning dump of physical memory physical memory dump complete.Contact your system administrator or technical support group for further assistance.有些我看不懂。重启以后还是会出现这种情况。今天到目前还没有再出现此种情况，不过不晓得过段时间还会不会出现。这到底是什么问题，怎么解决？劳烦大家帮我出出法子。谢谢！