PSU problem or not? Video every second boot

MalkyH · 01-28-2007, 12:00 PM

Hi all. New poster with weird problem.

Set up:
AMD K7, 256Mb memory, AMI bios
Video from NVidia GEforce FX5200 2048kb, AGP
Running WinXP Pro

Recently replaced my PSU when the old one gave ceased working.
OK, confession time. The old one gave up when I was trying to connect up an extra hard drive, so I fear that I may have fried something through static.

Anyway, new PSU is XPower ATX-400TD. The old one that it replaced was the 300W model that came with the case.

When I now press power button to switch on, fans come on, lights for CD flash and all sounds as per usual. Except that the monitor doesn't always come out of sleep.

If I hold down the power button to switch off and then try again, the monitor will then wake up and all is fine.

But if I then reboot again, back to square one - fans, lights but a sleeping monitor!

I've taken the new PSU back in case it was faulty - got an identical replacement and got identical problems.

Ideas anyone? Here are my thoughts to date:

1. PSU faulty? Unlikely as I've just swapped it out again.
2. PSU not up to the job? Also unlikely as my old 300W unit has been replaced with a 400W unit.
3. Poor Power_OK signal from PSU? If this is the case, why does it work on the second boot but not the third?
4. Damaged motherboard or video card? Possible, but why this regular works/doesn't work pattern?

All ideas welcomed, before I start replacing kit at random!

ghost · 01-28-2007, 03:07 PM

have you tried a different monitor, if so does it do the same thing?

MalkyH · 01-28-2007, 04:30 PM

Quote:

Originally Posted by ghostfacesuk

have you tried a different monitor, if so does it do the same thing?

Unfortunately I don't have a spare one knocking around ... but I'll see if I can borrow one and give it a go. Is there any logical reason why it should be the monitor or are you just suggesting to rule this out?

(Hey, I'm prepared to give it a go... little else is making sense)!

MalkyH · 02-04-2007, 12:42 PM

OK - I've now been able to try a different monitor.

Result: exactly the same problem as before.

I've also tried removing the video card, cleaning contacts with a pencil eraser and re-seating. No joy.

Don't have a second video card to try so I can't rule this out, however, my gut feeling is that more likely to be a motherboard problem?

01-28-2007, 12:00 PM	#1 (permalink)
MalkyH New Member Join Date: Jan 2007 Posts: 3	PSU problem or not? Video every second boot Hi all. New poster with weird problem. Set up: AMD K7, 256Mb memory, AMI bios Video from NVidia GEforce FX5200 2048kb, AGP Running WinXP Pro Recently replaced my PSU when the old one gave ceased working. OK, confession time. The old one gave up when I was trying to connect up an extra hard drive, so I fear that I may have fried something through static. Anyway, new PSU is XPower ATX-400TD. The old one that it replaced was the 300W model that came with the case. When I now press power button to switch on, fans come on, lights for CD flash and all sounds as per usual. Except that the monitor doesn't always come out of sleep. If I hold down the power button to switch off and then try again, the monitor will then wake up and all is fine. But if I then reboot again, back to square one - fans, lights but a sleeping monitor! I've taken the new PSU back in case it was faulty - got an identical replacement and got identical problems. Ideas anyone? Here are my thoughts to date: 1. PSU faulty? Unlikely as I've just swapped it out again. 2. PSU not up to the job? Also unlikely as my old 300W unit has been replaced with a 400W unit. 3. Poor Power_OK signal from PSU? If this is the case, why does it work on the second boot but not the third? 4. Damaged motherboard or video card? Possible, but why this regular works/doesn't work pattern? All ideas welcomed, before I start replacing kit at random!

01-28-2007, 03:07 PM	#2 (permalink)
ghost Diamond Member Join Date: Sep 2005 Posts: 2,093	have you tried a different monitor, if so does it do the same thing? __________________ ASUS A8N SLi Deluxe Corsair 2GB DDR XMS3200XL Pro TwinX (4x512MB) AMD Athlon 64 X2 939 4600+ @ 2.6 Ghz ATi Radeon HD 3850 @ 680/844 80GB SATA HDD/200GB PATA HDD 1x DVDRW DL 485W PSU, Alpha watercooling

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02-04-2007, 12:42 PM	#4 (permalink)
MalkyH New Member Join Date: Jan 2007 Posts: 3	OK - I've now been able to try a different monitor. Result: exactly the same problem as before. I've also tried removing the video card, cleaning contacts with a pencil eraser and re-seating. No joy. Don't have a second video card to try so I can't rule this out, however, my gut feeling is that more likely to be a motherboard problem?