HI. I got some issue with the laptop recently (windows 7). Previously i can connect to the wifi with no issue but suddenly it wont connect to ANY wifi. Any idea what is the hardware/software issue? Hint: - other computer able to connect to the wifi - this computer unable to connect to ALL wifi - this computer able to connect to internet using direct LAN - i recently service my computer fan exhaust (open the back of the laptop and clean it) I try some other method to solve it but no solution yet: + use windows troubleshooting + uninstall/install wireless adaptor + reset computer + disable/enable wifi + use cmd ipconfig/release / renew Please advise. Thank you.