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Biostar P4M80-M4 no video

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Hello and thank you in advance for any help you might be able to offer. I have built several computers before but I have never used a biostar mobo. I have eveything set up correctly except no video when I turn it on. I have rechecked connections, replaced memory, checked the CPU and it all seems correct. I am using my normal hard drive so I know thats not the problem. Fans and front panel lights work. I installed in a Ultra micro fly atx case. My CPU is Intel Celeron 350 3.20Ghz 533FSB socket 478.
Do I need to reset the jumpers? I have tried three monitors all of which are new flat panels. Is it possible that the mobo does not recognize a flat panel? I am stuck and frustrated. Thanks for the help. Shellie :blink:
Ok I have been rechecking again and I noticed that the HDD light on my case was a solid red so I reversed the connecters and tried to boot up. No light period so that didnt help. I switched to a different IDE cable, nope. The case has built in risers and I am using the washers between my screws and the mobo. so I am not shorting out. Video is onboard and I tried using a video card just in case the mobo video was shot and that didnt work. I am running out of ideas...Also I am not using a keyboard as my keyboard is wireless. Would not having a keyboard plugged in make a difference?
Well I took the heatsink and CPU out and cleaned them and reseated them. I am happy to say that I now have video. ALL IS WELL! :whistling:

Edited by Shellieg, 19 September 2006 - 07:03 PM.

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I would check page 8 of the manual about the JATXPWR1: ATX Power Connector which allows you to connect a 20-pin power connector if you don't have a 24-pin power connector.

I would also suggest you check out and make sure the Clearn CMOS jumper is in the right place. You can verify this by looking at page 15 of your manual and checking your motherboard to verify position is set to jumpers 1 and 2 and NOT 3 and 4.

Also verify that the 4-pin power connector is attached and firmly seated in position.

If none of that solves it, disconnect everything from the computer except for the keyboard and mouse. Don't have any PCI/AGP cards installed. Disconnect all IDE/SATA cables connected to the motherboard as well.

Another thing you can try is to Clear the CMOS using the instructions on page 15 of your motherboards user manual.


Edited by Fenor, 20 September 2006 - 05:58 PM.

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