I'm coming to the Experts Exchange because I'm at my wits end with an HP Elitebook computer that is pausing/hesitating/becoming unresponsive temporaily (about 3-5 seconds each time), every 30 seconds, throughout the entire Windows 7 session. Diagnostics have been ran - thorough testing - on the laptops hardware components - everything from the disk drive to the memory, and all other tests it has. Everything "passes". The computer has been restored twice back to factory default, which wipes the drive clean and reimages it back to a fresh Win 7 Pro OS with all the HP software reinstalled from factory. Weird thing is - the unit was fine and has worked fine since we bought it in 2012. Now it exhibits the pausing behavior immediately after a factory reset!! Without changing anything - just simply logging into it after the factory rebuild - it pauses every 30 seconds. I called HP support desperate for help - even though it's out of warranty. The tech checked for any known issues for this series laptop and said he couldn't see anything. His thinking was that maybe something is wrong with the OS somehow in the factory image, and to run a CHKDSK on the drive. Ran that today for an hour, to no avail. So - what could this be? I do notice that whenever its pausing, the hard drive light comes on solid. Seems to be something with the drive. but yet it passes the disk check. Any ideas are appreciated.