Sometime sees page not connected. Try 2nd time on yr Favourite.

If not, likely when to click d Login, u r unable to execute it. The main problem likely is d pop-up is set. Some web sites will send a pop up menu to tell d pop-ups is set. The fastest way to clear it is press Ctrl key and click d Login Bar. The instruction shown on d left hand bottom corner, if d pop-ups problem detected.

U may try d detious one by setting d pop-ups setting at Tools at the pull menu or if u r at Google web, then at the same line of Google Searh, look out for d pop-ups menu, it look like web page with 2 back pages behind it.

PS. Sometime yr internet line mementory interupted, page not found is common loh. Cheers.