Boot problem - System powers up but does not run

I'm having an issue, I just moved my computer from one case to another, I haven't changed any of the hardware except putting in a 52x CD-Rom.

It's using a new PSU, which is 250 watt, the old one was 300.

The issue: I turn the system on, it lights up, the CD-rom and HDD spin, the cpu fan is going, there is no signal from the video card and the computer doesn't POST beep.

I have tried unattaching extra drives incase it was power, switching IDE cables, changing out ram, changing out video cards, using a PCI vid card instead of AGP, clearing CMOS by pulling battery out for 10 minutes, even removing the processor and running mobo in which of course, nothing happens at all, when proc is in it turns on but does not boot. The only issue I can even think of is the PSU's ATX plug doesn't support my mobo, which is an ECS K7S5A.

I haven't changed any other settings or jumpers because this exact system worked in old tower, if you guys don't have any other ideas I will put it back in original tower, only reason I haven't yet is because friend is slowly aquiring parts to his new PC and has enough to set up in my tower, which is only one with enough power and size to fit his board.

Any ideas?

~Davatar

When you moved your system over, did you ground yourself? The smallest of electrical sparks can destroy your motherboard, believe it or not.

Depending on the HSF you have over the CPU, you may have inadvertantly applied pressure onto it and crushed the CPU. I crushed a CPU a while back, and the symptoms sound similar.

Well, I put together and worked on many systems, I always do it barefoot so I have no chance of building static myself, I worked on it in same place. I didn't change the HSF or processor until I had tried everything else I thought of, the problem occured right after removing mobo, putting it in diff. case, and hooking it up. The other possibility I thought of since was that the Ram slots were fried somehow, I ran the system without any ram and it did exactly the same thing. Oh one other thing I noticed however was the CD-Rom constantly flashes, as if it were trying to boot from it even though nothing is seemingly happening. When I removed the ram and booted, the CD-Rom didn't do anything, I put the ram back in and it started flashing again, this time however it only did it for 3 or 4 seconds, which is how it normally boots when system worked. Still no activity though. The moniter is fine, tested on other computers. The last thing I can think of doing is taking time to move the system back to original tower, if I have the same problem I probably fried the ram slots, or most of the board. If it works, then it was most likely the PSU ATX voltage on the 250 is diff. than the 300. I don't know why it would be though they are both the same kind, just diff. wattage and diff. brand. The 300 is Enermax, never had a problem with it, tested MANY systems with it. (I build and fix systems for friends and friends of friends all the time.)

~Davatar

You should pull all of your cables except the memory and video card.

It should POST to the monitor if your memory and video card are not damaged in any way. Try different slots if you're not getting anything. Then troubleshoot from there.

**Make sure your video card is seeded properly in the slot.

I pulled everything like you suggested, still nothing. Yes the video card is in correctly, I've tested it with a couple diff. vid cards including one that is PCI. I'm suspecting the board's fried in some aspects. I doubt it was any static, however the board has had a lot of use and been changed around many times now, I'm not surprised if it went. That's ok, I'm planning to build a new system very soon anyhow.

~Davatar

use the cmos jumper pins to clear the cmos memory, see if it boots then, maybe the move and the introduction of the new cd drive caused a freak thing, also have you hooked it back to the 250 psu, maybe the new one is not powering all the boards devices.

I agree, have you swapped power supplies to test the old with the new?

And...

Make sure there are no loose screws pinned between the board and the case. This will cause similar symptoms.

I don't know what CPU you have but if its an AMD then the PSU is most likely the problem. You need an AMD approved PSU which I think must be 300W. I came across this a few years back when I changed from an Intel to an AMD mobo and got similar problems. When I took this up with the mobo supplier I was told I needed to upgrade my PSU. When I did, the system powered up and booted with no problem.

Good luck,

Zaphodb

A followup 1 year later (because someone recently private messaged me in regards to this thread.)

I bought the pro version of the same motherboard, and it works fine. The other motherboard was shot, afterall. I tried hooking it back up in the old case and with the "old" PSU and it didn't work. Something on the motherboard went and I was lucky it didn't take anything else with it. *laugh*

(To this day I still have the same computer, with the pro version mobo. I have my 300watt Enermax PSU back too, my friend was given a few cases, one of which had a nice PSU in it. I think I ended up using that 250 watt to replace the PSU in my dad's studio computer. His old one fried. Heh heh)

~Davatar

Same problem here. I /just/ bought all the parts and put it together.

Runs perfectly, fastest computer I've ever used... then it locks
up and never boots again. Another motherboard bites the dust.

ASUS A7V400-MX mATX SOCKETA KM400A AGP 3PCI ATA133 VIDEO SOUND LAN

Same problem here...
Built a system:
MSI nForce3 Neo Platinum
AMD 64 3000+, 1GB RAM, AIW 9800PRO, DVD burner etc...
Worked off the bet, but with electric hiss sound... took me a week to figure out that the internal USB connection hooked to the CardReader was causing the problem. The same day - computer boots, gives a message that the CPU was over clocked and that it loaded default settings and it just stayed at that screen... Wouldn't let me go into BIOS - nothing...

Bought a new motherboard - ASUS K8V SE Deluxe - had it installed by a "pro"... Wasted 3 hours with SATA install - but got it to work ("two thumbs up" for ASUS ppl not including the SATA drivers for XP - also no idea why microsoft doesn't include them :S )
Installed everything - ran for 24 hours... At next boot - fans are on, but no screen, no bios, no beeps.. no NOTHING (the power and HDD LED is on, that's about it).
Second motherboard in 3 weeks bites the dust! YAY....
Cheers to all of you fellows with patience!
m.

that story was so depressing...I've built hundreds of computers, but lately I'm beginning the think quality manufacturing and shipping has taken a plunge. I've RMA'd the last 2 boards I've had this month. This one is my third Asus A7N8X-E Deluxe, and it works--but there is no video.
Here's the hardware list:
Motherboard: Asus A7N8X-E Deluxe
Processor: Athlon 2500+ (Barton)
Ram: Corsair Dual Channel PC3200 1Gig(512MBx2)
Video Card: Radeon 9600 SE AGP 128MB
HD: Western Digital IDE 120G w/ XP SP1
I know the video card works, because I switched it out and I'm using it right now. The hard drive hasn't been cleared...I know I will probably have to reformat sometime, but I should still reach BIOS and have a video signal. I can't really say for sure if I get past POST b/c I get the common "boot failed due to cpu overclocking"(this is a boxed-unused processor from newegg). I know that Asus put out a new BIOS that fixes this error, but I can't flash my board because I can't see anything...

Hello guys. I had the same problem. No video at startup, not even a beep. But fans and disk are runnning. After handing back my first motherboard, I got a new one. This one had the same problem. It is a ASUS A8V Deluxe. Last one was an Elitegroup KV2 Extreme. I had the same problem with both of them. Do not know if this solution works on the Elitegroup KV2.
Anyway, I reseted the the bios, pulled out everything exept video, was using only one single memory module, and pressed and holded down both delete and insert right after i pushed the power button. Somehow I suddenly got video and sound BEEP. After that I installed dual memory and everything else. Just changed in BIOS and it works.

He he, thx to everyone who gave me some nice ideas. I was about to hand in this motherbard as well, I were almost going mad . But now I am happy again.

can anyone help me.. i recently bought the kv2 extreme socket 939, with an amd 3000, kingston 512 3200, and i have been having some problems with it, i used a 40 gig ide hd with it and went to install xp on it.. xp install to the point where it goes to check the hard drive then it freezes, now xp will install on the same drive from another computer with flying colors but not when i connect it to the kv2 and try installing it from there. if anyone has any ideas how i can fix this please by all means send me the way to fix this i would really appreciate it..

Try a different video card.