If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Homebuilt Computer Won't Power Up
I've built 3 PCs at home with no problem, but now I'm stumped.
I wanted to put together a fourth box - so I got a new motherboard and a new case. Bottom line: when I first tried to power up - the CPU fan would spin but I'd get no video, no post beeps, or anything to indicate what the problem was. The problem has further progressed to where the PC won't even go on - the power light flickers but that's about it. I have tried using the same mobo in several different cases. I even used another known working motherboard. I swapped out various components (video, memory, power supplies). I considered that the motherboard and/or CPU could be fried, but there's been nothing to indicate that and I did try a different board. When I got the new board I used a CPU that I had, so maybe THAT could be the problem - but I figure it would still power up. Never had a problem like this! I'm stumped. Any help appreciated. The board is a Biostar P4TSE-D2. The chip is a Pentium 4 2.6 ghz. Peter |
#2
|
|||
|
|||
Different MoBo in the original case /w Power supply and its dead? Different
CPU also? Power supply is bonkers "Peter S." wrote in message news I've built 3 PCs at home with no problem, but now I'm stumped. I wanted to put together a fourth box - so I got a new motherboard and a new case. Bottom line: when I first tried to power up - the CPU fan would spin but I'd get no video, no post beeps, or anything to indicate what the problem was. The problem has further progressed to where the PC won't even go on - the power light flickers but that's about it. I have tried using the same mobo in several different cases. I even used another known working motherboard. I swapped out various components (video, memory, power supplies). I considered that the motherboard and/or CPU could be fried, but there's been nothing to indicate that and I did try a different board. When I got the new board I used a CPU that I had, so maybe THAT could be the problem - but I figure it would still power up. Never had a problem like this! I'm stumped. Any help appreciated. The board is a Biostar P4TSE-D2. The chip is a Pentium 4 2.6 ghz. Peter |
#3
|
|||
|
|||
On Sun, 29 May 2005 12:04:35 -0400, Peter S. wrote:
I've built 3 PCs at home with no problem, but now I'm stumped. I wanted to put together a fourth box - so I got a new motherboard and a new case. Bottom line: when I first tried to power up - the CPU fan would spin but I'd get no video, no post beeps, or anything to indicate what the problem was. When CPU fan spins I don't think its the power supply but the power supply could under powered for your new system. You need to check the power output specifications. The problem has further progressed to where the PC won't even go on - the power light flickers but that's about it. I have tried using the same mobo in several different cases. Did anything work? I even used another known working motherboard. Did it work ? I swapped out various components (video, memory, power supplies). Return to seller as defective merchandise. You didn't say which items worked or didn't work when you swapped various components. I considered that the motherboard and/or CPU could be fried, but there's been nothing to indicate that and I did try a different board. When I got the new board I used a CPU that I had, so maybe THAT could be the problem - but I figure it would still power up. Never had a problem like this! I'm stumped. Any help appreciated. The board is a Biostar P4TSE-D2. The chip is a Pentium 4 2.6 ghz. Intel CPUs are really stable and hard to kill on boot unless physically damaged like broken pins. Even so Intel is an honorable company and will exchange the CPU if it is damaged especially a boxed CPU. Peter |
#4
|
|||
|
|||
On Sun, 29 May 2005 12:04:35 -0400, "Peter S."
wrote: The problem has further progressed to where the PC won't even go on - the power light flickers but that's about it. I swapped out various components (video, memory, power supplies). I considered that the motherboard and/or CPU could be fried, but there's been nothing to indicate that and I did try a different board. When I got the new board I used a CPU that I had, so maybe THAT could be the problem - but I figure it would still power up. I am no expert but my suggestion: I had built a number of systems but the latest one I put together would not boot up even though I had done everything as normal. It crossed my mind that I had a bad motherboard until I realised that this latest one required the small (square) power connector to be fitted from the PSU to the motherboard. Everything was then OK. This may seem obvious to a lot of Newsgroup participants but it was my first experinece of the need for this additional power connection. Maybe your problem is as simple. KM |
#5
|
|||
|
|||
"Peter S." wrote in message news I've built 3 PCs at home with no problem, but now I'm stumped. I wanted to put together a fourth box - so I got a new motherboard and a new case. Bottom line: when I first tried to power up - the CPU fan would spin but I'd get no video, no post beeps, or anything to indicate what the problem was. The problem has further progressed to where the PC won't even go on - the power light flickers but that's about it. I have tried using the same mobo in several different cases. I even used another known working motherboard. I swapped out various components (video, memory, power supplies). I considered that the motherboard and/or CPU could be fried, but there's been nothing to indicate that and I did try a different board. When I got the new board I used a CPU that I had, so maybe THAT could be the problem - but I figure it would still power up. Never had a problem like this! I'm stumped. Any help appreciated. The board is a Biostar P4TSE-D2. The chip is a Pentium 4 2.6 ghz. Peter I had virtually the same symptoms just recently. The CPU and Power Supply fans would start - run for a few seconds, then the power would shut off. The, the two fans wouldn't even start [which was 'fixed' by turning the mains off/on] While this doesn't make sense to me, the rig powered up right after reseating the heatsink on the CPU. I can only guess that the CPU temp was exceeding the max/stable temp within the first few seconds without the heatsink being attached. |
#6
|
|||
|
|||
You are using shotgunning for a solution. Therefore you are
wildly speculating. Good PC builders break the problem down into parts; and then solve each problem. The one item that makes all other subsystems look defective is the power supply system. And so you have a another tool as important as the screwdriver - sold even in Sears, Lowes, Radio Shack, Home Depot, and WalMart. A 3.5 digit multimeter. The voltage on gray, green, and purple wires is particularly important. What are these voltages when you first attach a power cord, turning the time your press the power button, and after the power button is released? And after the power button is released, what is the voltage on red, orange, and yellow wires? With numbers, we waste no time wildly speculating, swapping parts (shotgunning), or posting to others who cannot provide any useful information (because they have no numbers). Details on how these numbers are obtained (in less than 2 minutes) are previously posted at: "Computer doesnt start at all" in alt.comp.hardware on 10 Jan 2004 at http://tinyurl.com/2t69q "I think my power supply is dead" in alt.comp.hardware on 5 Feb 2004 at http://www.tinyurl.com/2musa Pictures to help you see what is described a http://techrepublic.com.com/5102-10586-5566528.html www.ochardware.com/articles/psuvolt/psuvolt.html Even if you don't understand what those numbers say, well, now you have facts that will attract those who really know how a power supply 'system' works. Yes - 'system'. Power supply is only one part of that 'system'. Just another reason you need the meter. Swap a power supply and still have a defective 'system'? How would you know given what others have recommended? Instead break the problem down into parts. Verify integrity of the power supply 'system'. Once confirmed, only then are you ready to move on the the next part - the next usual suspect. "Peter S." wrote: I've built 3 PCs at home with no problem, but now I'm stumped. I wanted to put together a fourth box - so I got a new motherboard and a new case. Bottom line: when I first tried to power up - the CPU fan would spin but I'd get no video, no post beeps, or anything to indicate what the problem was. The problem has further progressed to where the PC won't even go on - the power light flickers but that's about it. I have tried using the same mobo in several different cases. I even used another known working motherboard. I swapped out various components (video, memory, power supplies). I considered that the motherboard and/or CPU could be fried, but there's been nothing to indicate that and I did try a different board. When I got the new board I used a CPU that I had, so maybe THAT could be the problem - but I figure it would still power up. Never had a problem like this! I'm stumped. Any help appreciated. The board is a Biostar P4TSE-D2. The chip is a Pentium 4 2.6 ghz. Peter |
#7
|
|||
|
|||
I'd have to say "guilty as charged"! I'd never had a problem like this
that I couldn't solve, but obviously this isn't one of those times. I shall try your solution and I do thank you for it. w_tom wrote: You are using shotgunning for a solution. Therefore you are wildly speculating. Good PC builders break the problem down into parts; and then solve each problem. |
#8
|
|||
|
|||
It is why we build things - get dirt under the fingernails.
Without that dirt, then your boss also could not help you; which is why the boss also must have dirt under his fingernails. The concept is not intuitively obvious. Breaking a problem down into parts and then collecting relevant facts. It is often learned by example - getting your hands dirty. Congratulations. You finally have an example that is useful (the rosy side of bad situation). "Peter S." wrote: I'd have to say "guilty as charged"! I'd never had a problem like this that I couldn't solve, but obviously this isn't one of those times. I shall try your solution and I do thank you for it. w_tom wrote: You are using shotgunning for a solution. Therefore you are wildly speculating. Good PC builders break the problem down into parts; and then solve each problem. |
#9
|
|||
|
|||
Been there. Check your PS. Just had to reseat the connector on mine.
On Sun, 29 May 2005 12:04:35 -0400, "Peter S." wrote: I've built 3 PCs at home with no problem, but now I'm stumped. I wanted to put together a fourth box - so I got a new motherboard and a new case. Bottom line: when I first tried to power up - the CPU fan would spin but I'd get no video, no post beeps, or anything to indicate what the problem was. The problem has further progressed to where the PC won't even go on - the power light flickers but that's about it. I have tried using the same mobo in several different cases. I even used another known working motherboard. I swapped out various components (video, memory, power supplies). I considered that the motherboard and/or CPU could be fried, but there's been nothing to indicate that and I did try a different board. When I got the new board I used a CPU that I had, so maybe THAT could be the problem - but I figure it would still power up. Never had a problem like this! I'm stumped. Any help appreciated. The board is a Biostar P4TSE-D2. The chip is a Pentium 4 2.6 ghz. Peter |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
FS printers/parts trays, printheads -- oki fujitsu dl3700 dl3800 hp genicom epson ibm dec jetdirect laserjet lexmark qms okidata microline 320 ml320 393 tally printronix tektronix qms toshiba zebra otc ibm intermec 7755 boul st laurent montreal ca | cisco | Printers | 2 | May 22nd 05 02:05 AM |
FS PRINTER PARTS trays fusers drums printheads -- oki fujitsu hp genicom epson ibm dec jetdirect laserjet lexnmark qms okidata ml320 mannesmann tally printonix tektronix qms toshiba zebra otc ibm lexmark intermec dec compaq montreal canada toronto o | [email protected] | Printers | 1 | March 15th 05 05:50 AM |
Won't Power Up after Power Outage | Greg Lovern | Homebuilt PC's | 7 | February 8th 04 01:47 PM |
NF7-S power up problem | Jeff Green | Abit Motherboards | 9 | January 18th 04 07:06 PM |
Silent Computer - Advice | David Taylor | General | 45 | October 7th 03 11:26 AM |