Currently Being ModeratedJun 30, 2012 6:51 AM (in response to irvstarr)
Make a "Genius" appointment at an Apple Store to have the machine tested.
Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros (do this only if you have at least two complete, independent backups, and you know how to restore to bare metal from any of them.) Don’t erase the Lion recovery partition, if present.