Hey people, I'm new to these forums but I have a problem. I have a computer right (basic details below Windows XP Intel Pentium 4 3.0ghz 2gb ram (4x 512mb sticks) Nvidia GeForce 7600 GS 512mb gc Motherboard (Albatron PX865PEC Pro socket 478) And i cannot fully remember back to what actually led up to it, but it just won't power on at all. Now you may be thinking the basics like checking power cables and that everythings plugged in and connected properly but I'm no amatuer, I know my computer knowledge. Everytime I've had problems I've been able to fix them but until now I'm caught in a rut. At first I thought it was that my power supply failed (ASTRO 500watts Form Factor 'ATX') but I tested it on another computer and it powered fine and had been working well up till when my computer stopped powering on. I've tried unplugging and reseating all the devices including, ram, video card, hardrive, cpu etc. and carefully connecting them but no budge. I do not know whats wrong. My 2nd thought as to why it wouldnt power on was maybe that the wires on the front panel indicator weren't properly connected like: (HD LED, RST, PWR-LED, PWR ON, PWRLED, SPEAKER) and were stopping the computer from turning on. But I've tried reading the motherboard manual and reconnecting them but still no response. I've tried taking out certain devices that also may be stopping computer from turning on. But I'm beginning to think and heard that if the cpu heatsink isn't properly seated firmly on top of it that it can cause it to not start??? Same as having processor not seated properly, and I'm thinking maybe that could also be a possibility. But I would like some advice and help for my problem, assistance from someone please because I don't want to spend money or getting it repaired without knowing what's actually wrong with it. I'm waiting and open for any ideas and assistance please Sorry for the big paragraph, thanks in regards.