Hi guys,

The operating system of my laptop is windows 8 beta. All things are fine. But this morning, I downloaded something, and then the system indicated me that the system files have been modified so that it can not be used. And it required me to plug in a disc. Then as a computer newbie, I do not know what shall I do next. How to shut down the prompting box?

Pls advise!

Your help will be appreciated!

If you have a system disc, just follow the indication and plug in the disc. If no, please click to cancel.