cunaguaro

I know this might sound familiar to some of you out there, but please help me to solve this, its really urgent, since i need this pc for work, I would greatly apreciate it. so here it goes..

I bough the following components from tigerdirect.com:
- PCChips P23G v3.0 socket 775
- Intel Celeron D 3.4 GHz
- Two 1GB Corsair DDR2 DIMM RAM
- Thermaltake Silent 775D CPU Fan

the other components were taken from a broken pc i had (the hard disk, the floppy, the power supply, a video card. and the chasis)

the installation went fine until i powered it up and it didn't show anything on the monitor ( no signal ), so far:

- The HD was spinning
- The CPU fan was spinning
- I can turn on/off the 'Num Lock' light on the keyboard
- When i unplug the monitor the 'no signal' disappears
- The LED light is red.

** When i power up the machine, the CPU fan will spin fast for a few seconds then slow, then fast again then slow, a so on.. **

I researched the net for a solution to this and tried:
- Clearing the CMOS (and nothing)
- Removing 1 of the memory sticks (and nothing)
- removing the HD (and nothing)
- checked the monitor in another pc (it worked)
- removing the PCI video card (and nothing)
- made sure the board doesn't have contact with the chasis (it does not)
- made sure the CPU Fan is well fit on the board (not really sure, but it looks like it is pretty firm, and on the cpu)
- got on my knees and pray to god for a miracle (and still nothing)

After all this tries, the machine will do just the same, I dont know what else to do, any idea is welcome, any help is appreciated it, if you give me the solution to this, you'll make me the happiest person on earth, im really frustrated please help me...


Thanks in advance...

Stu_computer

hi cunaguaro, welcome to tsf.

- Clearing the CMOS (and nothing)
put the jumper back on pins 1-2 properly?
for this mobo you usually press <del> to enter bios, but when cmos cleared then use F1 key to setup bios first time.

- Removing 1 of the memory sticks (and nothing)
you have DDR2 ram so use the red sockets only, (the 2 sockets closest to cpu are DDR2 the other 2 are DDR1-cannot use both types at same time).
no beeps when no ram? did you connect a speaker to SPK1?

- removing the HD (and nothing)
leave disconnected till posting okay. disconnect all drives and extra cards (audio, ethernet, etc) and mouse-only keyboard, video, and ram needed for startup.


- made sure the board doesn't have contact with the chasis (it does not)
done the bench test?
- made sure the CPU Fan is well fit on the board (not really sure, but it looks like it is pretty firm, and on the cpu)
dab of thermal paste on cpu prior to installing heatsink?

why was it broken?
need details for that psu make-n-model and/or the ratings from it's label.

edit:
just remembered, you have the 4-pin power connector on PWR2?

cunaguaro

Hello Stu_Computer, thanks for the welcoming, and thanks for the reply, i really apreciate it.

- When clearing the CMOS, i removed all the power cables, set the jumper to he CLEAR configuration (pins 2-3) for 10 minutes, then i set it back to the NORMAL configurtation (pins 1-2), i plugged every back in its site, powered up the machine, and nothing happen, i press and holded the DEL button, but nothing happen, the monitor still says "no signal". right now im working and i can't check to see what happens if i press the F1 button, but as soon as i get home ill try that.

- I bought two DDR2 sticks ( each for 1 GB) and push them into their corresponding socket ( the first two red ones ), i had to apply a decent/hard force to push them into the socket. they are firmly installed in the sockets, with the two locks set correctly for each. as far as the speaker, my case's speaker has a different type of cabling (four pin) and im not sure if i should install it on the board ( i did tried but no sounds no beeps or anything when i power it up)

- I tried everything; with-without HD ( the HD is still connected to the Power supply, and it spins its powered), I alse disconnected everything else it was connected, the Ethernet, the Video card, the floppy etc... and left only the board, the cpu, the cpu fan, the monitor, the momory, and a keyboard, but no changes.

- I have not done the Bench test, but the chasis has a few of those (I forgot how they are called) "sepparators" screws, on the chasis. As soon as i get home I'll try the bench test anyways..

- Before mounting the CPU fan, I applied the the thermal paste on top of the CPU.

- The old psu had to be replace due to that the CPU fan case was broken and it was impossible to keep it close to the CPU, it ended up damaging my CPU ( burning a couple of the possesor's pin ). The board was old, and the possesor was slow too.. before all this happen, i had to replace the power supply for it because the older one burn out, and it wouldn't turn on, so pretty much the power supply is almost new.

- As soon as i get home I'll post more information about the psu, try some of your solutions, and get back to you.

Once again, Thank you Stu_computer very very very much...

Regards

dai

when you clear the cmos you have to also remove the battery

cunaguaro

Hi dai, thanks a lot for the reply,

When clearing the CMOS I removed the battery, I checked it to see if it was ok (by putting the tip of my tongue on the top part) and I believe its ok (i felt some electricity on my tongue) and then set the CMOS config to "CLEAR". and again.. nothing changed...

Doby

Try the bench test, if still the same make sure a case speaker is connected, remove the ram and power on.

The board should beep indicating it can find no usable memory, if it does not beep like this that indicates that the motherboard is bad

cunaguaro

Last night I got home from work, and looked into the bench test and did everything it said with no success... the monitor still does not get a signal from the mother board, I pressed the F1 button but nothing happen, I tried the F9 and still nothing...

I connected the speaker to the board, removed both memory sticks, i powered it up, and the speaker instead of beeping, it made a weird low sound (maybe the speaker doesn't work). and it makes it countinously. I placed back one of the memory sticks, powered the psu back on, and the speaker would make the same sound, continously..

Does this mean that the memory is incompatible, even thought it has all the specifications that the MOBO demands ? (DDR2 533 1G)

what should i do? ...

dai

what power supply
brand
watttage

Stu_computer

the board is for a 4 pin socket, are you connecting to the right location? {it's in the corner near the battery.}
spkr1.bmp
click image for enlargement.

edit: if speaker was connected properly then I think you have made more than a reasonable effort to resolve the problem and it's time to take the mobo back and get a replacement-it's new and it shouldn't be causing you this much grief.

cunaguaro

Well this problem has become a nightmare for me , so ill do what you said and return everything, and pay for a new assembled pc. its sad to quit like this, but whatever...

Thanks all of you that posted back.

leoquinn2001

I have the same problem

You can check out the cpu support for the p23g at the pc chips website. You may also need to find what your cpu core stepping is, and what is supported. I have this board and i just had to return my pentium d 940 cpu to tiger cuz its a B1 core stepping but the board supports the C1 core stepping version. You may need the latest BIOS installed but i guess this wont help if you cant even POST, lol

If you do get a new mobo and cpu i recommend looking at the mobo/cpu combos so you dont run into cpu compatibility issues