回複：Youtube 癱了2-3天了，do you know, Why? (^o^)/~

My PC had the same problem several month ago. It turned out the DNS server setting of my PC was changed to to a DNS server in China by a unknown virus software. when you brower the youtube web site, the http request was redirectd to a website in China.  I could not visit the youtube.com becuase the website is blocked in China. 

please run the following commands on your to check the probelm

1. open a DOS window on your PC

2. type ipconfig -all  to get the DNS server ip address.

3. run tracert command to find out if the DNS server is a server in China