Question about Compaq (388746-001) (  388746-001) Motherboard

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Compaq Presario 4400us

The computer originally would not power up. So I purchased the correct power supply and installed it. Now the symptoms are: Plug power cord in power supply and the power comes on immediately with out pushing power button. Only the CPU fan comes on and the power light is red (bad) not Green (good). You can hear the harddrive spin up but nothing else happens. No video. No POST beeps. Nothing. If you push the power button nothing happens. When you Push and hold the power button for more than 4 seconds the Harddrive LED lights solid and the CD drive lights green solid along with power light stays Red and CPU fan stays on. After this if you push the power button the Hardrive and CD LED's go out Power light stays Red and CPU fan stays on. Power can not be turned off except by unplugging Power cord. Anyone see this before. Fried motherboard or CPU?

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Re: Compaq Presario 4400us

Either the new power supply you purchased is not functioning correctly. But, assuming it is now that you are getting some form of power to your PC, it is very likely the motherboard. Whatever fried your old power supply (or it could have just been the power supply itself) most likely fried your motherboard in the process. Probably not the CPU since the MB can't even post.

Posted on Jun 21, 2007

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You've provided too few info.
It's impossible to guess the reason w/o additional facts.
Is it switch off immediately or it peforms correct Windows shut down procedure? Or may be it just reboots?
First leads to a hardware failure, most probably power supply unit or motherboard (less probably). Try to just replace PSU at first (get one for test from your neighbor or friend, you just need to make connections, no need to install PSU to the case).
Second leads to a software problem, such as virus activity or driver failure. Try to explore events in Windows Event viewer. You may need to call pro to find the failure.
Third may lead to both hardware or software problem. Very wide variety of problems. You'd provided no more symptoms. Most probably profy required at the place.

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try to jump green and any black wire from the power supply...if the fan dont work..power supply is damage..need to change..

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Powe Supply Problem Compaq

I did some research and the powersupply for that machine is a standard ATX powersupply, so yes just about any off the shelf power supply will fit and work. They may be overkill but that's fine.

HP sells the proper power supply for your machine for $98US as part number 176764-001 . There parts store is at

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Compaq 4400us windows install fails on errors

Microsoft Windows XP help Windows XP is available in the below versions:. Home Edition - Full / Upgrade ... Computer

Additional information and help with the boot.ini. If multiple operating systems are setup in the boot.ini, as the computer is booting you will ... Microsoft Windows XP Home Edition Microsoft Windows 2000 .

Good Luck, Please dont for get to Vote/Thank You.

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