Dell Studio 17 Problems -- My response to the fact that the service tag is wrong and statement that I've already diagnosed the problem

Dear Friendly Dell Support,

Please note, the service tag is [snipped] (as noted in the original
email below) not H06P82J.

I'll try these steps as soon as I get home this evening.

Note, however, that I hooked up an external USB keyboard and mouse and
they worked perfectly -- I hope that already helps you a bit with the
diagnostics in eliminating a software/OS problem.

Regards,
Michael Maguire