I have been having a reoccurring issue with my Windows 7 64-bit desktop.
My comptuer is on 24x7 and often says on with out rebooting for weeks.
Dozens of times, the "save" dialog just stops working.
Outlook attachments, word, excel, internet explorer (right click, save), firefox (right click saving pictures) - when I hit the save or save as button on an unsaved document (word and excel) - the save dialog does not come up.
I can open my computer and windows explorer.
Reboot fixes it - and i have been living with it until tonight. Had 5 unsaved word documents open. Usually i just end task on word, reboot and the auto recovery picks them all up and i save them. This time it lost all 5 and i could not recover them.
I have tried rebooting office apps, going to taxk manager and ending "explorer.exe" and restarting it - but that does not help.