I have a mobo that i got from an old computer, the mobo worked fine. I changed the thermal compund and dusted the cpufan. Now the mobo wont start, it starts and stops, then it restarts and stays on without any post, with no beep or display output. I know my psu is fine, i used the psu in my main rig, but no luck. I have tried wit a diffrent cpu, and ram, and i have made sure that my ram is ok. I have tried resetting the bios, changing cmos battery, but with no luck. I hope i can get some help with somebody that has a long experience with computer building!