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I got no video on a new built system

Last response: in Motherboards
April 10, 2009 7:56:40 PM

I am building a new PC with Biostar motherboard MCP6P M2+ and CPU AMD A64 X2 4400+.
So far to test the system boot, I only have the following connected to the motherboard: 2 GB memory, CPU and heat sink, 24-pin power connector, CPU 4-pin power connector, USB mouse and keyboard, and the monitor. When I turned on the system, the CPU's heat sink fan ran. However, I didn't get any video on the monitor. I have swapped a "working" memory and I still got the same result!!! One of my friends thought it could be the built-in video card fail and suggested me to install an external video card to see if it helps. However, I don't have an external video card onhand to test it out (I may have end up purchase one just to test it out). I just want to see if anyone out there can shed me some light...!!!


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April 10, 2009 8:21:03 PM

Go through the new build checklist:

After the checklist, try this:
Pull everything except the CPU and HSF. Boot. You should hear a series of long
single beeps indicating memory problems. Silence here indicates, in probable order, a bad PSU, motherboard, or CPU - or a bad installation where something is shorting and shutting down the PSU.

To eliminate the possiblility of a bad installation where something is shorting and shutting down the PSU, you will need to pull the motherboard out of the case and reassemble the components on an insulated surface. This is called
"breadboarding" - from the 1920's homebrew radio days. I always breadboard a new or recycled build. It lets me test components before I go through the trouble of
installing them in a case.

If you get the long beeps, add a stick of RAM. Boot. The beep pattern should change to one long and two or three short beeps. Silence indicates that the RAM is shorting out the PSU (very rare). Long single beeps indicates that the BIOS does not recognize the presence of the RAM.

If you get the one long and two or three short beeps, test the rest of the RAM. If good, install the video card and any needed power cables and plug in the monitor. If the video card is good, the system should successfully POST (one short beep, usually) and you will see the boot screen and messages.

Note - an inadequate PSU will cause a failure here or any step later.
Note - you do not need drives or a keyboard to successfully POST (generally a single short beep).

If you successfully POST, start plugging in the rest of the components, one at a time.
April 26, 2009 7:20:41 PM

Remove one of the sticks of Memory. MCP6P boards suffer from a design flaw that can cause a system to stall on boot with more than one stick of RAM. After three attempts of RMAing my board, I finally got one that will take 2GB of ram (in 1GB increments) without stalling.