I still having problems with opening Threads content

Unfortunatelly, Im still having the same problem I cannot read any Thread in the Forum all pages when I click on them appear white, I dont know why. I can see only Titles but I cant open nor even a Thread. Also, I cant see my Threads; I post them and then a white page its opened, I cant neither see my old Threads. I cant interact with other Members, I cant see what they post and or upload. Well, in fact I only can do Tasks, read Titles and upload Threads, read privates mails  and that all. :(

I saw in Titles in My problem an answer of lilshorty but I cant read it because the page is white ...

May be its an Issue with the system? Really, I dont know what to do since Im not a PC expert ... :(

I hope the issue can be solved! :) Thank you.