No video on monitor

Hewlett-packard Compaq v1000 monitor
July 13, 2009 at 13:21:14
Specs: Windows XP
NO VIDEO AT ALL "CHECK CABLES, MONITOR IS WORKING, CHECK PC. i TRIED UNPLUGING EVERYTHING, FANS, HARD DRIVES ALL DEVICES POWER UP BUT NO VIDEO. tried 4 different motherboards with one no fan same issue. four different vga cards onboard and bought new. nothing. tried different monitor same thing. check pc. does not even go to bios. checked ram- replaced trying again...nothing,. following motherboards AsRock DDR400 nonecc dimm pc 3200 184 pin., cpu no fan but powers on the board, tried AOPEN AK79D-400VN PC2700 DDR333 184pin non 2cc.....with cpu/fan...powers but no video on agp card., SIS741GX-MN with all components the original problem 184dimm DDR 333 and all no video...I give up what should I try next. I am going back to office depot to exchange for a card that is compatable for PC2700and 3200 see if that works. and out of ideas....there is power so the power supply is not bad is it? all cables are fine. no bios just pic of check cable, pc, monitor is working.

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July 13, 2009 at 16:11:32
"there is power so the power supply is not bad is it?"


The fact a few fans may spin is no guarantee a powersupply is not faulty.
In all your experimenting did you use the same CPU?

Did any of these motherboard produce any BIOS beeps during any of your experimenting?

I suspect either your CPU has failed or the powersupply.

Goin' Fishin' (Some day)

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July 13, 2009 at 17:07:44
Failing power supplies are common and can cause your symptoms.
Check your PS.
They often partially work, fans and hard drives may spin, leds may come on, yet you may get no video and the mboard will not boot all the way.
See response 4 in this:

If it is failing, you can usually replace it with any decent standard sized standard ATX PS with the same capacity or greater.

If you have another known working PS (that definately works with a system) with enough capacity you could try connecting that before buying a new one.

Standard (PS/2) power supply size - 86mm high, 150mm wide, 140mm deep, or 3 3/8" h x 5 7/8" w x 5 1/2" d , or very close to that, though the depth can be more or less for some PSs.

Don't buy an el-cheapo PS.
See response 3 in this:

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July 14, 2009 at 22:41:52
I checked video cables and new rams they are fine. the motherboards are different the cpu's are different. I will try swapping power supplys , ty will let you know tomorrow.

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