It finally booted after I disconnected the Wireless adapter. But when I reconnect the adapter the PC hanged.
I tested different UBS devices with the same port, some hanged the PC and some not. Before yesterday, all of the devices were working fine on that PC.
Here are my test results:
Canon i550 printer : working
64 mb flash drive: working
2 G flash drive: not working
ZyXel Wireless 11b/g USB Adapter: not working
Portable hard drive: not working
Could anybody help me to identify the reason of the problem?
Many thanks in ahead.
Edited by Sima, 11 November 2007 - 10:10 AM.