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Monitor won't power on at startup

By tmbearden ·
I just changed a HD on an old pc and installed Win98se. It works fine with exception that the monitor will not power on at startup. I have to manually turn it on. It will power off at shutdown. Any suggestions.

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by CG IT In reply to Monitor won't power on at ...

in the OLD days, AT power supplies has a port for the monitor to plug into so that when the computer turned on so did the monitor. Not so with ATX power supplies. If the on button on the monitor is OFF [assuming you've got the thing plugged into a surge protector and THAT is plugged into a wall socket] well, the monitor is off until you push the button on. Not sure if they make ATX power supplies with a port for the monitor. Best person to ask that is TheChas or go take a peak at some of the power supply maker's web sites [enermax,antec,thermaltake, sparkle [gods but they are terrible].

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by tmbearden In reply to

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by RCOM In reply to Monitor won't power on at ...

I think I'm missing your question so excuse me if mine seems dumb or obvious. Is the power button on the monitor being physically pushed when the PC is being turned off? If so it won't come on. Or are you saying you have to push the button even though it wasn't pushed?

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by tmbearden In reply to

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by TheChas In reply to Monitor won't power on at ...

This does sound a bit strange.

Correct me if I am wrong.
When you power up the PC, the monitor power indicator glows yellow, and stays yellow.
You need to cycle power on the monitor in order for it to come on.
Correct?

If correct, check the following:

Make sure that the monitor cable is fully seated in the video connector.
It would be worth the time to inspect both connectors for bent or damaged pins.

Check the monitor settings for any kind of power off modes.

Is the PC plugged into an outlet strip, and is the outlet strip turned off after the PC powers down?
If so, and the monitor has a "soft" power button, it would default to the "off" state.

Chas

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by TheChas In reply to

Information on your system components might be helpful.

What Monitor
Video card
PC or motherboard

Chas

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by tmbearden In reply to

When I power on the PC the monitorpower indicator glows yellow for a moment and then goes off. It is at this point that I have to manually turn the monitor on. The monitor is a 17" HP. The whole system is plugged into a power strip, but it does not turn off auto.

The PC is old a PII or III 166.

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by TheChas In reply to Monitor won't power on at ...

Usually, when the monitor powers itself off the way you describe, it is an indication that the video card is sending an unsupported refresh rate signal to the monitor.

Have you tried this monitor on another system?
Or, another monitor on this system?

Since you say that this started happening after changing the hard drive. It may be wise to open the case up.

With power off, make sure that ALL plug-in cards and cable connectors are fully seated.
Remove and re-seat your RAM modules.

As a side note:
If the system speed is 166 MHz, it is either a Pentium or Pentium MMX.

The slowest PII was 233 MHz.
I don't remember for certain the slowest PIII, but I think it was in the 500 MHz range.

Chas

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by tmbearden In reply to

I tried another monitor on this system and it powered up ok. I haven't tried this monitor on another system as of yet, but I will. I will also check all the connections inside the case as you suggested. BTW, the monitor is a HP pavillion MX90.

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by sgt_shultz In reply to Monitor won't power on at ...

do you think it is work trying another video card?

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