audi a6 车身号码防伪:关机的问题

最近我的电脑在关机时出现蓝屏,上面写:

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 make sure any new hardware or software is properly installed.If this is a new installation,ask your hardware or software manufacturer for any windows updates you might need.
If problems continue ,disable or remove any newly installedhardware or software.Disable BIOS memory options such as caching or shadowing.If you need to use safe mode to remove or disable components,restart your computer,press F8 to select Advanced startup options,and the select safemode.
Technical information.
stop: 0x0000000A(0x00000444,0x00000002,0x00000000,0x804F73c5)
beginning dump of physical memory.
physical dump of physical memory.
physical memory dump complete.
contact your sys tem administrator or technical support group for further assitance.

需要重启以后才可以关闭,重启以后还要自检.

也没有安装新的软硬件,而且经常出现,请问这是怎么回事?