为什么电脑会突然蓝屏?

电脑最近频繁的出现蓝屏问题.两次是运行一些大型软件的安装,还有一次不知什么原因,只是在上网.蓝屏后只能强制关机.蓝屏时有如下错误说明:
a problem has been detected and windows has been shut down to prevent damage to your computer
irql-not-less-or-equal
if this is the first time you've seen this stop error screen, restart your computer. if this screen appears again, follow these steps.
check to be sure you have adequde dispace. if a driver is identified in the stop message, disable the diver or check with the manu facture for driver updates. try changing video adapters.
check with your hardware wendor for any bios updates. disable bios memory options such as caching or shadowing.if you need to use safe mode to remove or disable component, restart your computer, press f8 to select advanced start up options, and then select safe mode.
technical information
stop 0x0000008e c0xcoooooo5,0x8056cf2a,0xf96a6414,0x00000000
begining dump of physical memory
physical memory dump complete
cont