Computer Problem

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