Computer will not POST or BOOT, fans do NOT spin

Sheaiscool · Jan 9, 2014

Computer will not POST. fans do not spin, no beeps. Motherboard lights will turn on (not the PSU light though) I turn on the power. The CPU clicks, the fan moves for like half a second. My ram is good and CPU. I checked the PSU using the paperclip and it's fine. One thing i did notice is when i unplug the 4 pin CPU power connector and turn on the computer, the fans will spin, the MOBO and PSU lights will go on and everything, but, obviously it cant post without power to the CPU. help please!

link to motherboard- http://www.intel.com/support/motherboards/desktop/d945plnm/sb/CS-022505.htm

shortstuff_mt · Jan 9, 2014

Perform all the steps in this troubleshooting checklist and let us know how it goes.

Sheaiscool · Jan 9, 2014

It's still doing the same thing. :/ what kind of PSU is required for my motherboard? i have like 2 other PSU's. They do the same thing. Any ideas?

shortstuff_mt · Jan 9, 2014

Sheaiscool :

I have lots of ideas on what could be causing the problem. They're all listed in the troubleshooting checklist I linked to above. We get a lot of posts like this everyday, that's why the checklist was created. After you've performed EVERY step in the checklist we'll go from there.

Sheaiscool · Jan 9, 2014

I've performed all the steps. It still does it. D:

shortstuff_mt · Jan 9, 2014

What are the complete system specs? Is this a new build, or did the system work for a while and quit working?

Sheaiscool · Jan 9, 2014

New build.
Motherboard- Intel D945PLNM
CPU- Intel Pentium/1M/800/04A
GPU-Geforce 82208M. PCI (older)
RAM- Hynix DDR2 ram. 1gig stick. I can put more but, im testing with this one.
HDD- Seagate Barracuda 7200 360gb
PSU- Dell N255PD. (random one someone gave me. I have other's but, they're 20pin only).

shortstuff_mt · Jan 9, 2014

Those are some old components. Are they known working components? What BIOS beep code are you getting? Did anything change when you performed step #6 on the checklist? What is the model number for the CPU? Here is the CPU support list for your motherboard:

http://www.intel.com/support/motherboards/desktop/d945plnm/sb/CS-026636.htm

Note the warning on the CPU support page:

"Warning: Processors not specifically listed by type and rated speed may have requirements that are not supported by the desktop board's design. Use of unsupported processors may result in improper operation, damage to the desktop board or processor, or reduced product life."

If your CPU isn't on the list of supported CPUs then you are likely out of luck.

Sheaiscool · Jan 9, 2014

I guess i got the wrong processor. I ordered this one yesterday. Will it work? http://www.ebay.com/itm/231115105472

shortstuff_mt · Jan 9, 2014

Sheaiscool :

The Pentium 4 521 that you just bought is on the list of supported CPUs, so it should work as long as there isn't another issue preventing the computer from working. Your current CPU may also be supported, but I have no way of knowing without the model number for the CPU...

The model number is listed on the top of the CPU like in this picture of the CPU you just bought.

http://www.auctiva.com/hostedimages/showimage.aspx?gid=1103604&image=473630391&images=473630391&formats=0&format=0

Sheaiscool · Jan 9, 2014

i have serveral 775 CPU'S. I'll name them. Intel pentium 4 3.00. SL7PU 5510A956, Intel pentium 3.20. SL7J7 3443A358, and intel pentium 4 2.80 SL7PR L447A542, intel pentium 4 3.00 SL7PU 5452B889.

shortstuff_mt · Jan 9, 2014

I'm not sure why I'm checking these instead of you, but here we go:

The SL7PU is a Pentium 4 530J which is listed as supported with your motherboard

The SL7PR is a Pentium 4 520J which is listed as supported with your motherboard

The SL7J7 is a Pentium 4 540 which is listed as supported with your motherboard

All I did was plug the SL7** code you provided into Google to find the actual model number. Since all those processors are listed as supported then the best one to use would be the Pentium 4 540 since it's the fastest one. If none of those processors work then it looks like you have something else preventing the system from working. I didn't see an answer to my question about the results of trying different sticks of RAM or if you're getting a BIOS beep code.

Sheaiscool · Jan 9, 2014

thank you!

i will try to change the ram sticks again. There's no beeps. What's so ever. :/ when I FIRST got the mother board (forgot to mention) it did post, but the fans ran super fast. It has not worked ever since. And it POST'ed 3 times. in 2min. Then it made beep codes that sounded like an ambulance, bee doh..bee doh...bee doh. After that, it's been doing what it's doing now

shortstuff_mt · Jan 9, 2014

What does the motherboard owners manual say about the beep code you were getting? Was it one long and one short beep? The owners manual should have a list of all the different beep codes and what each of them mean.

Sheaiscool · Jan 9, 2014

It said CPU overheat. But, i switched CPUs and it still doesnt boot. :/

shortstuff_mt · Jan 9, 2014

Did you have thermal compound install and the heat sink installed properly when doing your tests? I would trust the motherboard when it says the CPU is overheating. The CPU can't run even for a short time without the HSF installed.

Sheaiscool · Jan 9, 2014

yes, i do. It, still doesn't post :/

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