When comming back from standby, PC can't connect to the net unless I power off & on Tried to disable/enable the NIC(rtl8139 O/B), the ADSL modem(Alcatel510), didnt help1 person got this answerI do too

Check Power Settings for the network card, make sure "Allow the computer to turn this device off to save power" is not enabled. When this is a problem, try opening a command window (Start - Run - "cmd"), and ping two commands: "ipconfig /release" "ipconfig /renew" Another community answer from the Windows XP newsgroups