Computers curse them

Modern technology how I do moan
I sit and concentrate then I groan
Pressed the wrong button screen goes blank
Call the kids you'll have them to thank
For getting you right back on track
Curse yourself for knowledge you lack
"Mum just watch it's easy as hell"
By your blank look they can surely tell
You have missed it again back to square one
That's the first lesson is turning the bloody thing on