I felt a sense of achivement today - with much of physical pain.

basically I fixed my dad's desktop computer by re-installing the CPU heatsink (it was 90°C CPU temperature, like wtf) and after fixing the stupid DEFECT heatsink properly, the temp is now down to a proper 50°C.

also, don't know why and how I suddenly felt enlightened on how to connect the S/PDIF to the HDMI. I realized that my dad's desktop is able to use one of the cable to direct signals from motherboard S/PDIF to the VGA HDMI. so, the HDMI cable now not only have visual and also audio signals.

oh and, I installed windows 7 on my dad's computer.
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but, still there's this brain agony. damn NETWORK INFRASTRUCTURE, it's all freaking memorising work. 9 chapters of knowledge to memorise, how?!