Question about Compaq (261671-001) Motherboard

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PC HAS POWER BUT WONT BOOT

MY PC HAS POWER THE FAN WORKS ALSO THE FAN FOR THE CPU BUT WONT BOOT I CANT EVEN GET A SIGNAL TO MONITOR.
I REMOVED POWER TO DVD AND HARD DRIVE AND REMOVED THE RAM, AND AT 1 POINT THE GREEN LIGHT CAME ON AND HAD A LONG BEEP PERIODICALY BUT THAT EVEN STOPPED AFTER A WHILE

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This is a clarification request as well as a possible solution... are you using the onboard video, or a video card via pci, agp? because if you are using a new video card or a new motherboard you may have to use the onboard video temporarily to boot up and install drivers for the motherboard, then plug in the video card and it should boot up so you can install the drivers for it.... sometimes this is not the case though, i have had to trick a computer into doing this before which is not a smart idea at all...

Posted on Mar 11, 2009

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1 Answer

Pc not booting


If you hear the CPU fan turn on that doesn't mean the CPU itself is working. It can be only that the motherboard is getting power. Check all your connections such as monitor and peripherals and re-connect them. If you still don't get P.O.S.T. or ANY letters or boot options on your screen then your CPU is dead. (unless your monitor is bad)
Another easy diagnostic is using your ears. For example the pitch sound of the fan in some motherboards tends to lower and then increase because it's reading of the hard drive. This means your CPU is ok but either your graphics connection is bad or your monitor is.

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Got an interesting issue. I've got a dell inspiron 531 with a dell ry206 motherboard. Bad news is, when I boot up the pc, the power turns on, the fans turn on, but that's it!, only CD ROM and cpu fans...


Hello
Open up the case,after unpluging pc.

Remove memory sticks one at a time.After you removed one try pc again.

If it boots up normally then you know that memory stick is bad.Also check your keyboard by unpluging and pluging back in while booting up.

More then likley this is bad memory.

Mar 24, 2011 | Dell Motherboards

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Keeps telling me no signal


The motherboard is not telling you there is no signal, the monitor is..
In this order:

  1. Test the connection from graphics card to monitor, try a different monitor to eliminate this from the issues.
  2. If other monitor works, the old one is causing the problems
  3. If new monitor does not work:
  • Check the graphics card is seated properly, if possible, test with another graphics card, if this works, the issue is with the graphics card
  • If this does not work, check the fan on the cpu, is it spinning? If not, make sure the fan is connected to the motherboard
  • If the fan is spinning, remove all the ram, reboot, you should get a series of beeps, make note of these and repost them (computer will not boot)
  • If you get NO beeps with ram removed, the CPU or motherboard are possibly dead, if possible, replace CPU with known working one and retest with and without ram in, make sure you have thermal grease on the CPU>heatsink. Replace the Ram (or one module)
  • If you get a single beep and the motherboard powers the monitor, the CPU was your issue
  • If you get no beeps, confirmed death of motherboard.
Possible other solutions: Remove CMOS battery, leave for 1 minute and then replace, see if it boots
Check the power switch from the computer front panel is not sticking

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My Mother Board Is **acer sf2 661fx rev 1.1**. Now I Have A Problem, Please Solve This.......... No Signal To Monitor, But Mother Board Is Working. After That I Tried To Solve The Problem By Following...


haii all.....
i facing problem on mb acer sf2 661fx rev 1.1 no power to cd rom and hdd...also monitor not shown anything... cpu fan and casing fan only working..any idea pls..

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P4I45GV R5 Motherboard: i have intel 945g motherboard the cpu fan runs but...


Check you Ram. If possible, try with another working ram. Clean the port. It is also possible that your cpu is overclocked, remove the bios battery and leave it outside for few minute and reinsert it and boot the system. If this doesn't helps, you'll need to check your display card also. Try the monitor on another pc. Still here to assist you further. good luck and thanks for using FixYa.

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check the board for blown capacitors. I have found many boards from power circuits to motherboard with popped capacitors over the past 5 or so years. replace them and tada, it lives again. I've been successful several times with this operation. Please see the picture below for a guide to finding bad caps.
11_23_2012_3_03_50_pm.jpg

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Sounds like the CMOS battery on the motherboard needs replacing...i would try clearing CMOS first, replace battery and test voltage at the CPU (through the BIOS) If that dosen't help you likely have faulty capacitors.
If you get it to boot, im sure drivers and BIOS will need updates if it's been stored 2 yrs.

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Pc Seems to be dead wont load bios post moust doesnt work or keyboard or monitor


I have the same problem, the CPU fan spins, keyboard lights blink, no start up screen, or bios.
But, when I push a few times on the pc reset button, then the CPU fan is becoming still, the keyboard light are out and I can start the computer again in a normal way.
Can this one be a temporally solution for you too? Do you have any suggestion about?
I guess it can be an electricity dysfunction of a wrong fixed cable.

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