hi. I thought I had a problem with my psu or something in my system but I just need your advice. there are two computers hooked up on one plug, mine with amd x2 6000+ and my bro's hp computer with 400W. And we live in an apartment. Ok. When I used my computer like in april, it was running smooth without any problem. But now in summer time, there is a bit of a problem with random shutdown of my computer (it just powers down without any notice). Whenever my brother turns on his computer while I was using mine, mine turns off immediately. Whenever I try to open CPU-Z, my computer turns off. when ever I turn on my AC, my computer is unstable. Is it because of shortage of electricity or is there something wrong with my system? and if this pronglongs, could there be a permanent damage to my system? by the way, the fuse goes out often when we use hair dryer with 850 watt.