When I turn on my computer blank screen. No POST or BIOS etc.

Hi, I have this problem on my spare computer. Every time I turn the
computer on I am presented with a blank screen. No POST or BIOS
appears and the led on the monitor is yellow (it turns green when it
gets a signal). I recently changed the graphics card from a Nvidia
Geforce 4 to a Ati Radeon 9800. I have tried the monitor in the
onboard graphics and on the radeon and I still have the same problem.
The computer used to work fine. I disassembled the computer a couple
of months ago because I was going to use it as a server but decided to
reassemble it and sell it on. I have reset the CMOS but still to no
avail. I'm really stuck. Please Help.

wrote:
> I have this problem on my spare computer. Every time I turn the
> computer on I am presented with a blank screen. No POST or BIOS
> appears and the led on the monitor is yellow (it turns green when it
> gets a signal). I recently changed the graphics card from a Nvidia
> Geforce 4 to a Ati Radeon 9800. I have tried the monitor in the
> onboard graphics and on the radeon and I still have the same
> problem. The computer used to work fine. I disassembled the
> computer a couple of months ago because I was going to use it as a
> server but decided to reassemble it and sell it on. I have reset
> the CMOS but still to no avail. I'm really stuck. Please Help.

If there is no post - then this is far beyond a Windows Update issue. POST
is a pre-OS operation.
http://www.webopedia.com/TERM/P/power_on_self_test.html

In other words - hardware issue. Either you fried something or connected
something back incorrectly.

--
Shenan Stanley
MS-MVP
--
How To Ask Questions The Smart Way
http://www.catb.org/~esr/faqs/smart-questions.html

Hi there,
You probaly forgot to uninstall the Nvidia graphics driver.

Best regards,
Michel denie

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> Hi, I have this problem on my spare computer. Every time I turn the
> computer on I am presented with a blank screen. No POST or BIOS
> appears and the led on the monitor is yellow (it turns green when it
> gets a signal). I recently changed the graphics card from a Nvidia
> Geforce 4 to a Ati Radeon 9800. I have tried the monitor in the
> onboard graphics and on the radeon and I still have the same problem.
> The computer used to work fine. I disassembled the computer a couple
> of months ago because I was going to use it as a server but decided to
> reassemble it and sell it on. I have reset the CMOS but still to no
> avail. I'm really stuck. Please Help.
>