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Monitor or Video Card?

By mjcarey ·
How can I tell if the problem is with the video card or monitor?

Background:
When I power on my PC (486DX2--Compaq), everything "appears" to work except the monitor...however, I also do not receive any beeps and the power supply & fan appear to be working....

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Monitor or Video Card?

by Brian Lusk In reply to Monitor or Video Card?

The monitor should have a light on it, usually next to the power switch. If it is amber and never goes green, odds are it is the video card. If it goes green but never shows display, odds are it is the monitor. The best bet is to have a friend put the monitor on his computer and test it out.

HOWEVER!!! Your Compaq computer ALWAYS should give you TWO BEEPS, regardless of video card status, after about 45 seconds. The 45 seconds is the typical length of the POST, and two beeps indicate the computer is running. If you NEVER get two beeps or any beeps at all, you are looking at RAM or CPU instead. A beep code of 2 long beeps and 5 short beeps (sometimes 7) would indicate a bad video card.

Hope this helps!

Brian Lusk
brianlusk@netzero.net

P.S. If you aren't comfortable tearing down your own PC, you probably better have a local computer guru or computer shop look at it. They will usually have lots of swappable parts to play with. -BJL

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Monitor or Video Card?

by mjcarey In reply to Monitor or Video Card?
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Monitor or Video Card?

by lucard In reply to Monitor or Video Card?

If you do not hear any POST beeps then the problem might be CPU related. If you hear strange beeps, then your video card may be gone. If you hear the normal POST beep(s) then the video card is working and the problem may be monitor related. However, the POST (power-on-self-test) suite can only detect chipset and interface problems your video card may have. If there is a broken contact in the monitor plug, the POST will not detedt it. The simple thing to do is to try your monitor on another system. This will give you the only certain answer to the above question.

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Monitor or Video Card?

by mjcarey In reply to Monitor or Video Card?
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