I was having trouble with my computer.

So I called Richard, the 11 year old next door,
whose bedroom looks like Mission Control,
and asked him to come over.
Richard clicked a couple of buttons and solved the problem.
As he was walking away, I called after him,
'So, what was wrong?'
He replied,
'It was an ID ten T error.'
I didn't want to appear stupid, but nonetheless inquired,
'An, ID ten T error? What's that? In case I need to fix it again.'
Richard grinned.
'Haven't you ever heard of an ID ten T error before?''
No,' I replied.
'Write it down,' he said,
'and I think you'll figure it out.'
So I wrote down:
I D 1 0 T
I used to like the little shit.