Charter internet

So I have a 2G wifi I can connect to and a 5G wifi I can connect to. I have always been able to connect to my 5G wifi, but as of recently, whenever I click connect on my computer, it says "Can't connect to this network". I am able to connect to my 2G wifi on my computer only. On my phone and...

i have a old lenovo think pad r60 laptop. i put in a new/old HDD fresh window 7, did not have any problem till few days ago it will not boot past starting windows screen . I've tried different ram/HDD safe mode..last know config.hdd test. nothing works please help thanks