grammatical number - There is no hardware issue or There are no hardware issues?

Situation:
I asked a customer to run a diagnostic test on a drawing tablet because he had a problem of using it on this computer. The customer ran the test on his tablet and gave me the data from the test. I see no issue/issues with the tablet hardware. So, I'm writing an email to him and not sure if the "issue/issues" should be singular or plural in the given situation.

We're quite sure "there is no hardware issue" or "there are no hardware issues" with the tablet.

Which one is correct here?
If, they are both grammatically correct, which one would be more preferred to use normally?

Thanks for your help.

Edit:
Would the sentence below be more appropriate or sounds more natural?

We're quite sure "there is no hardware issues"