A "hardware flaw" refers to a defect or problem in the physical components of a computer or electronic device. It is something wrong with the hardware, like the computer's processor, memory, or other parts. Full definition
Apple's speed in issuing a battery replacement program indicates that it found some kind of hardware flaw, but it's equally possible that a software bug is causing battery issues at the same time. (bgr.com)
One final hardware flaw: The PlayBook only comes in a wifi - only model right now, with no plans for a 3G version until the summer. (businessinsider.com)
Too many bugs and obvious hardware flaws. (tmonews.com)