Need some Tech support

Sounds like your motherboard is going bad and needs replacement. If you cannot receive signal from the monitor from two different types, cables and graphics card. Either way how old is your pc and what type of motherboard socket is it? Examples Intel: LGA 775, LGA 1156 , Z68, LGA 1336? AMD AMD2+, AMD3, AMD3+ (Motherboard that runs AMD3 and the run AMD FX processor that comes out. But don't worry try replacing the CMOS battery. Need step try resetting CMOS for the bios if it works.



If not... then the motherboard probably went bad from a old/leaking capacitor. Check this link out http://en.wikipedia.org/wiki/Capacitor_plague

It doesn't sound like it would be the PSU however I might be wrong because capacitor are also found in PSU if it sounds like it is booting then chances are the PSU might be working



Check your RAM, & Harddrive and don't forget your CPU. Check if the fan is even working or the CPU chip is working. Whats your CPU chip also.
Remember to clean your pc regularly so dust doesn't build up and cause trouble for your graphics fan and cpu fan.