k7s5a and blank screen boot, was working a week ago, MB? or PSU?

[dannybin1742]

today i booted up my k7s5a, no screen signal at all

i switched the cpu, still no signal

(i had a 1.0duron- switched it with a 750duron)

switch the graphics card out, still no signal

unplugged some fans, still no signal

i have to mension though that when i first put the computer together, it did not start the first time and i restarted it several times and i finally got a video signal, once the system was all set up it could be restarted without problem.

now is my 250W generic PSU the problem, or is it the MB?

I'd also like to mension that this board was bought from a reputable seller on AT

 

[Kazuo]

It's most likely the power supply. A lot of boards are very picky about their power supplies. And a generic 250W is usually not suitable for ANY K7 system. Spend like $30 and get a nice true 300 or 350W power supply and you should (hopefully) be good to go. See if you can borrow someone else's (good!) PSU to test, if possible.

 

[Buz2b]

I agree the PS is a most likely culprit but make sure you take out (again) the video card and reseat it a couple of times to make sure that it is firmly in place. Seriously do this a couple of times. Wouldn't hurt to do this same thing to the RAM.
Other than that, test a different, more powerful PS on it.

 

[Kazuo]

I agree wholeheartedly. When I built my first Athlon system (basically the same one I'm using now- the same K7VZA board anyway), mine wouldn't POST, and I couldn't figure out why for the life of me. I called ECS, they were pretty useless, but they offered to replace the board if I couldn't figure it out. I told them I'd give it the old college try. Called AMD, and while my CPU was an OEM (and I told them this) the guy was still really helpful, and mentioned that the times he'd experienced similar problems with the K7VZA, it was because he didn't firmly press down on the DIMMs to make sure they were well-seated. So, I tried this, and... beep! it POSTed.
Really crazy, but yeah, if something got dislodged, make sure you secure the parts in tightly. It does matter.
(I have not since had problems with this sort of thing. I also upgraded from a generic 300W to an Enlight 340W since.)