Solve : vista,limited connection on wireless?

1.	Solve : vista,limited connection on wireless?
Answer» i cannot connect onto my wireless router,i have a work laptop on vista, my other laptop on xp & windows works fine, if i put the lead into the router, works fine, if i switch off my router and back on, the wireless connects, switch off my laptop, then its gone again,please HELP me.Please POST your computer and router brand/model along with any ISP MODEM connection. Did it work flawlessly before on wifi connection? What protection softwares do you have and security settings(WPA/PSK, WEP) on your wireless? Work laptop may not be configured for DHCP.

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