Conditional Formatting that checks every cell in a range

So I've applied conditional formatting to columns A and B to highlight and bold any blank entries. However since those guys tend to show up a thousand rows or so down I don't have anything to alert me that there is a problem. I know that I can just filter those columns to check but I'm not the only one using this sheet so I'd really like to have a visual cue.

Is there a way to have cell J1 highlight if any of the cells in the range (A2:H3000) have been bolded?

Thanks!