Question about Compaq (261671-001) Motherboard
I am trying to build a Compaq presario tower PC and am running into boot issues. The power supply light on the back shows green. When I turn the machine on it powers up the HD and the button on the case shows green for power but that's it. No video at all. I reset cmos and still nothing. The power supply is working as far as the fan and all lights are green. No beep codes either. HELP!!!!
Take off the center heat sink and check the coprocessor. I bet you find it is black as it has overheated and fried the board. From what i have heard from my other techie friends they state that the power supply puts out to much power for the board to take and as you can tell... your problem and mine with the above stated board is that we need to replace it and throw away the old one.
Posted on Dec 20, 2008
The power supply has to have an extra 2 pin plug that plugs intoP9. I think it powers the video PDP-121 PSU is the one you need
Posted on Apr 01, 2010
I am very well versed on connections for power supplies. All of that is alright. Both go into the main board and are snug and installed. I have done the memory thing and as far as cards there was only 1. A network card and I pulled it. According to the guy that I got this thing from all was working well before I got it. I would doubt that from anyone else but he is a power seller on ebay with %100 positive feed back. Also the keyboard lights up for a split second when I turn the unit on but no lights after that. All the jumpers on the one hard drive I have are set correct. Plugged and unplugged the cd drive and switched hard drives also. If I could only get cmos I would be in the clear. But to my dismay no freakin video at all. Just a nice amber light on my monitor.
Posted on Dec 22, 2007
I always say this and many times people yell at me...so please don't be offended.
There are two power supply cables. One is long and rectangular, the other is a small square shape. Are they both plugged in?
If they are both plugged in then the next step is to pull the memory, remove any boards (graphics, modem, ethernet, etc) and disconnect all the drives. Try booting it with everything removed. If you still hear no post codes then it is either your power supply or motherboard.
If it will POST (Power On Self Test) with everything disconnected then start adding items one at a time and see if it fails again. If it does fail you will have hopefully found the problem component. However, if it's the power supply it still might work with only a few items plugged in. It will take some experimentation to nail it down.
I hope you will take just a moment and tell us if any of this helped.
Posted on Dec 22, 2007
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Posted on Jan 02, 2017
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