I've suddenly gotten two issues with my screens in Excel. First in Pivot tables, after I've created my pivot table and I try to filter with the dropdowns nothing shows up unless I cursor down. I've tried reinstalling Excel but it still happens. I've checked for a virus and have nothing. I've got a gig of RAM so that should not be an issue.
Next problem is randomly a dialog box will not go away when closed. I have to minimize the workbook or change sheets for the box to go away and the screen to refresh.