This has happened a few times, when I haven't used my laptop for 10 minutes or so, it just freezes. I had to power cycle it. Does this sound like a hardware issue? What can I do to diagnose this issue?
Software: Windows 7 Ultimate 32-bit
Hardware: Acer Aspire 5517; AMD Athlon 64 X2 dual-core TK-42, 3GB RAM