I am using Excel 2013 on Windows 8 PC and working on a somewhat large file for election fundraising but no formulas and about 1200 rows by 12 columns....small potatoes. But I keep getting the error message, insufficient resources to complete the task with almost every keystroke. I have updated windows and excel updates and it is very annoying, especially as I will need to be using this file alot this week post election. It seems to be a common issue. Anyone help me quickly? Thx!