Jangkun Song

Hi, I wrote a thread below with the same tilte, and thank all for suggestions.

I just want to update the situation.
I found the problem (locked up sometimes) occurs when CPU speed is high.
When I use my X50V in power saving mode, everything is fine and no problem. However, in other modes (auto, normal, maximum), the locked up problem occurs.
However, not always the case.
The CPU speed does not cause any problem in many programs and games,
but the problem appears when trying to start some program (HiCalc v.2.0, my little tank ...) in the CPU modes(auto, normal, maximum).

Someone told me that the previous owner might overclock it and cause some problem in CPU.

Do you agree? any suggestion?