My 4 and a half year old Quantex has gone through hell and back with me, and it's got the poor functionality to show for it. Last night, it froze up again, and Ctl Alt Del wasn't working, so I hit the main power switch in the back to turn it off. Well, it didn't want to turn back on. Still doesn't. I hooked up my wife's PC to my monitor and such and I'm running on that now. Has this happened to anyone before? I'll be taking it to a repair shop sometime this or next week, but I was wondering if anyone knew what it could be.