p5wdh, power but no display

tuxy

hi,
i have a p5w dh deluex motherboard i ordered from ocuk it was working fine
i updated to bios version 1503 and restarted and everything seemed fine
the next time i went to do a cold boot it powered up(cpu fan, gpu fan ect all working) but i get no display and no keyboard lights.
my case has no system speaker so i cant tell if it beeps
i reset the cmos bios by taking out the battery and using the jumper, but no change
i really dont know what to do, any advice would be great.

full system
Asus P5W DH Deluxe WiFi (Socket 775) PCI-Express DDR2 Motherboard
Intel Core 2 DUO E6600 "LGA775 Conroe" 2.40GHz (1066FSB)
NZXT Lexa Classic Series Ultra light Aluminum Midtower
Samsung SH-S182D 18x18 DVD±RW ReWriter (Black)
Connect3D ATI Radeon X1800 XT 256MB GDDR3 AVIVO TV-Out/Dual DVI (PCI-Express)
Enermax Noisetaker 485W EG495AX-VE(G) SFMA ATX2.0 PSU
Scythe Ninja Plus Heatpipe CPU Cooler (Socket 478, 754, 939, 940, LGA755)
G.Skill 2GB DDR2 HZ PC2-6400 (2x1GB) CAS4 Dual Channel Kit
Western Digital Raptor 74GB WD740ADFD 10,000RPM SATA 16MB Cache

tuxy

i left the pc off for about 30 mins and its working again, weird
it says i have to enter setup so i do.
when i save settings and reboot it stops working again

Anti

Well this is rather obvious tbh. your psu is not up to the job. It is reccomended you have at least a 600W+ psu for what you have. tripple 12v is also reccomended.

Simply put get a 600W+ psu. I have ordered a very similar system to yours, and i have got a 800W psu.

I am 100% sure this is your problem, If you need the pc urgently, dissconnect all other removable media, apart from your main hdd.


Btw your 1800xt takes 180W power on boot/peak. cpu about 80. well if you work it out, you know what i mean


Also depending on your case, you could fit a second power supply, and short it. This would help if you dont have the money for a new psu. there are many articles about this on the internets

po0k

tuxy wrote:

hi,
i have a p5w dh deluex motherboard i ordered from ocuk it was working fine

^
|
|
How long between these two points?
|
|
-

tuxy wrote:

i updated to bios version 1503 and restarted and everything seemed fine
the next time i went to do a cold boot it powered up(cpu fan, gpu fan ect all working) but i get no display and no keyboard lights.

If it was running ok under load beforehand, I doubt it's a power consumption issue.
180W (gpu) + 90W (cpu) +30W (mobo+ram) + 12W (hdd) + 20W (fans, misc) ~=330W.
The individual rail capacities might be something to look at to make sure, but I'd say your PSU should be ok.
Have you checked the Asus forums or the release notes for the bios?
Sounds like the board is trying to recover from a failsafe config, have you fiddled with stuff to underclock everything and get a stable cold boot?

tuxy

Well i left the pc off for an hour and it was stable enough to flash it back to an older bios
The new bios was a beta and ment to fix a slow cold boot problem and i had read reports on differnt forums of people using it with no problems.

po0k

So after going back to the older BIOS it's now stable again?
If so, I'd suggest waiting till a new RC or Stable BIOS is released.

Sir Random

I have a very similar setup, and it works fine with an Enermax 500w.

The 'cold boot' issue only happens if you're overclocking the CPU (pressing 'restart' will cut power to everything, instead of soft booting).
I don't have a problem with this, but some people think it might damage their hard drives if power is suddenly cut off.

Just stick with the working BIOS, I'm using 1401 and it's rock stable @ 3.2Ghz