New case, same pc, won't stay on.

[nageov3t]

My new computer case came in the mail on Friday. I finally got around to moving my parts into it tonight. the hardware installation went alright, but after powering it on, nothing happened.

all the fans are spinning and the power light is on in-front, but the machine is not posting. it is not giving off any beeps either.

anyone have any suggestions for things to check out? like I said, it's the same PC I was using yesterday, so it's not as if the ram is bad or anything. the only thing that's changed has been the case itself and the powersupply (new antec case; came with its own powersupply).

the case: http://www.newegg.com/app/viewProductDesc.asp?description=11-129-142&depa=0

update: thanks for all the replies.

I got post this morning. turned out that the voltage setting on the PSU was wrong. now I can't get it to stay power on for more than 30-45 seconds, though. it's on long enough for me to get into the bios or get a "no boot device found," error, which should mean that it's not a ram issue, and the CPU should be fine as well. airflow in the new case is less than ideal, but I haven't even put the lid on the case yet, and it's super cold in my apartment. all the fans are spinning and unobstructed, and there are no beeps from the motherboard other than the standard "I'm turning on" beep. it just goes straight fron on to off, and needs to be unplugged before trying to power it back on.

anyone have any other suggestions before I RMA this case?

 

[mage333]

There's a simple but annoying way to test if either your new power supply or case is the culprit.

1) To see if the power supply is the problem: hook up your motherboard to your old power supply and see if it POSTs.
2) To see if the case is the problem: remove and reseat your motherboard, with small risers if necessary. Power it up and see if it POSTs.
3) Aww heck, reseat everything.
Don't forget to remove all non-essential equiment before troubleshooting. Only the CPU, RAM, motherboard and video card are needed to POST, so no sense in risking anything else.

Anecdote: Last February 2004, my friend "Jim" bought a half-new/half-used system. The case was new and the rest he got from used from our circle of friends. When Jim assembled his rig, he screwed the motherboard in too tightly. A pin on the back of the motherboard made contact with the case and short-circuited the second he turned power on. Capacitors popped so we turned it off. Of course, this being Jim, he tried to power the computer on again. The chips on the motherboard caught fire right before our eyes. Poor Jim. When we removed the motherboard there were burn marks on back and on the case too.

 

[JimPhelpsMI]

Hi, Remove everything except MB, CPU, Mem and Video. See if it trys to post. If so start adding stuff one at the time, Hd first etc. You should have a good idea of the problem unit real soon. I never put anything into the case until I have the whole system up and running laying on my work bench. Jim

 

[NightTrain]

Originally posted by: JimPhelpsMI
I never put anything into the case until I have the whole system up and running laying on my work bench. :thumbsup:

 

[Icepick]

If you have an upscale video card like a 6800GT/Ultra or Radeon X800XT (or higher) check that the power connector is plugged into the card. These cards require their own power. The next step I'd recommend is to remove your board from the case. There could be a loose screw lodged under the board and shorting it to the case. I've seen it happen before.

 

[nageov3t]

bump for update. thanks all.

 

[nageov3t]

afternoon bump. anyone?

 

[Icepick]

Originally posted by: loki8481

update: thanks for all the replies.

I got post this morning. turned out that the voltage setting on the PSU was wrong. now I can't get it to stay power on for more than 30-45 seconds, though. it's on long enough for me to get into the bios or get a "no boot device found," error, which should mean that it's not a ram issue, and the CPU should be fine as well. airflow in the new case is less than ideal, but I haven't even put the lid on the case yet, and it's super cold in my apartment. all the fans are spinning and unobstructed, and there are no beeps from the motherboard other than the standard "I'm turning on" beep. it just goes straight fron on to off, and needs to be unplugged before trying to power it back on.

anyone have any other suggestions before I RMA this case?

Is this a new install? I mean are any of the parts new or are you moving all your existing components including hard drive w/OS installed?

If this is a fresh install then make sure the Windows installation CD is in the CD-ROM drive when you turn on the PC.

If all you're doing is moving your existing equipment into the new case with no changes other than the case then it sounds like your hard drive may have been damaged by the incorrect power setting on your supply since it can't find any boot devices. Leaving the power set to 240V instead of 120V can fry a lot of components. Try another hard disk if you can.

I doubt it's the case itself causing your issues.

Edit: Actually, try putting the Windows installation CD in the primary CD-Drive either way just to see if that gets you past the "no boot device found" message.

 

[nageov3t]

Originally posted by: icepik

Originally posted by: loki8481

update: thanks for all the replies.

I got post this morning. turned out that the voltage setting on the PSU was wrong. now I can't get it to stay power on for more than 30-45 seconds, though. it's on long enough for me to get into the bios or get a "no boot device found," error, which should mean that it's not a ram issue, and the CPU should be fine as well. airflow in the new case is less than ideal, but I haven't even put the lid on the case yet, and it's super cold in my apartment. all the fans are spinning and unobstructed, and there are no beeps from the motherboard other than the standard "I'm turning on" beep. it just goes straight fron on to off, and needs to be unplugged before trying to power it back on.

anyone have any other suggestions before I RMA this case?

Is this a new install? I mean are any of the parts new or are you moving all your existing components including hard drive w/OS installed?

If this is a fresh install then make sure the Windows installation CD is in the CD-ROM drive when you turn on the PC.

If all you're doing is moving your existing equipment into the new case with no changes other than the case then it sounds like your hard drive may have been damaged by the incorrect power setting on your supply since it can't find any boot devices. Leaving the power set to 240V instead of 120V can fry a lot of components. Try another hard disk if you can.

I doubt it's the case itself causing your issues.

Edit: Actually, try putting the Windows installation CD in the primary CD-Drive either way just to see if that gets you past the "no boot device found" message.

it's not a matter of not being able to boot up the OS; the computer is shutting itself down no matter what I do after about 30 seconds of staying up. the no OS found message is just to illustrate that it's getting through loading up the bios, so it's probably not a bad cpu/ram issue.

I've pretty much decided that I'm going to RMA the case/psu. now it's just an issue of arguing with newegg over whether or not I should have to pay a restocking fee

 

[biostud]

Is the CPU cooler seated properly? it sounds like an auto shotdown.

 

[Ausm]

1)Pull the mobo out set it on a nonconductive surface

2)Onl have the CPU,Video card ,and memory installed

3)Hook up the soft power switch then see if it will fire up.

4)If it fires up then you where shorting out in the case.

Ausm

 

[bocamojo]

I would remove and reseat the video card, RAM, etc. Recheck all power connections. I would also remove and reseat the CPU's heatsink, and make sure all the fans are connected to the proper fan headers, and that all the fans are powering up properly. Also, make sure your motherboard is on risers, and is not touching the case in any way (to prevent a short). If none of that works, then try and swap power supplies from your old case to your new case, and see if that fixes the problem. Could be a bad PSU.

 

[airfoil]

Definitely sounds like a CPU overheat Auto Shutdown. The first thing I'd do is remove and carefully reinstall the HSF.

If this is fine, the next culprit could could be the PSU.

 

[JimPhelpsMI]

Hi, This may not be anywhere close, but the guys may be right about CPU overheating. I assume you removed the HS to change the CPU over. Some HS have a ridge on the bottom that will only fit one way on the CPU. If the ridge is in the wrong position it sits on the CPU and there is practically no contact with the CPU and you definitely get overheating. Take a real good look at that HS. Jim

 

[Zepper]

If your mobo has one of those CPU protection features, you may have to clear the CMOS (be sure the power is disconnected from your system when clearing the CMOS or it will fail - unless the clear cmos instructions in your mobo manual say differently) to be able to boot. Or the speed sensor wire on your CPU fan may not be working or spins too slow for the mobo to get a reading. Make sure the CPU fan is connected to the fan header marked specifically for it (i.e. marked 'CPU Fan'). If no luck, connect the CPU fan to another fan header and hook a known good high-speed (at least 3000 rpm) case fan to the CPU header (may have to clear the cmos again after each failed attempt).

.bh.