Hardware Problems, no boot screen, no beeps

[Riveninside]

hey all. i'll try and explain this as best as i can... i'm using my laptop right now so i can still check the net.
ok, well i got my computer back from my otherhouse and set it up, started playing on it, and all of a sudden everyhthing just turned up and froze, so i restarted it, got back on and it did the same exact thing, but it's werid, it used to vary from how much it would let me be on. than it wouldn't send any thing to the monitor, so first though, my video card went out, so i used a known good one and tested it... still nothing. so i went and bought a new video card and a new case for shiz and giggles, and even swapped to another known working motherboard just incase something was screwed with that... (went from a leadtek K7nCr18-d pro to a asus A7N8X Deluxe) and still nothing, so i tried 2 different processors and still... nothing comes on the screen. all the harddrives and everything is powering up. even the fan on the videocard. so i know there is power going to the video card. but still there is no signal, i even swapped to a different computer to test both my moniters and they both worked, but something is really screwed somewhere in my system...
that was the explanation now the simple one

Nothing coming on screen
Swapped 2 video cards and bought a new one
Swapped another motherboard on
swapped 2 different processors
everything is powering on
tried 2 different Power supplies (450w and 500w)
tried 2 different sets of ram
still nothing coming on the screen.

any ideas??

i'm tempted to build a whole new system but i dont want the same sorta thing happening all over again on the new one

also i bought a new motherboard and it should be here in just a few days (bought one from new egg so it should be fast shipping) and i'll try that.

 

[v8_h8r]

well you didnt try a new hd that could be the problem. also make sure you disconnect the cd roms. I had a computer not start up because of a cd rom before.


J

 

[TheMostWantedPolishTwin]

...did you try different ram..? it won't hurt for sure

 

[codename47]

are you swapping outside the case or screwing everything back into the case and starting it... sometimes the problem you are talking about comes from a grounding issue... you my be shorting it out inside the case... if you haven't done so put it all together on top of a couple of antistatic bags and then use a butter knife to start it on the front panel to see if you can get it to work outside the case.... I've also had problems if a case is slightly bent it throws off the slots and how well AGP cards fit ... and a wise man once explained to me how AGP is a lot pickier than PCI slots when it comes to fitting all the notches and making the right connection. I hope that works.... if you have questions about anything I've said PM b/c I don't check back on things I type that often... good luck

 

[Riveninside]

well i didn't have anything other than the processor, ram, and AGP card, and it still didn't come on the screen, i cleared the bios, still nothing, so i started unplugging stuff and when it didn't beep when the ram was out i kinda just had the feeling it was the motherboard. but i'm comin on here to see if ya'll have ideas, as of now i'm thinking the psu or the mobo, but thats me