Thread: P5Q Cold Boot Problem

In the evening I shut down my pc through windows start menu - I DO NOT PULL the power cable off or anything like that.

The next morning I get "no video signal" out of the graphics card for my monitor. The pc boots completely normal I can here it reaching the log in screen. At that point I restart or reset my pc and it suddenly starts completely normal with video signal and everything. It runs absolute stable (no bsods whatsoever) I can play for hours, I can restart it as often I want... until I leave it shut down over night.


I tried two different graphics boards

1. NVIDIA ASUS GTX260 --> it gives out a video signal even at cold boot in the morning, but is only recognized as "standard vga adapter" till the daily morning reset. After that it runs just fine! (Fan always turns, I can always have at least a low resolution vga signal)

2 Radeon 4850 from Sapphire --> it doesn't give out a signal at all till you morning reset the rig. (Fan always turns; at morning start screen stays completely black)

I don't have the slightest idea which part of the machine is to blame

Monitor?
Graphics cards?
Mainboard?
PSU?
RAM?
Bios?
Drivers?
---

I will try out a new set of RAM soon, but since I can only try one change a day it’s pretty annoying... so maybe you could help me out with some ideas!

My Specs, none of these are or have ever been overclocked!

Asus P5Q Motherboard
X-Fi Soundcard
Nvidia GTX 260 or Radeon 4850
4 GB Corsair Ram (2 x 2GB)
Intel E6600 (Dual Core 2x 2,6 GHz)
Enermax Liberty 600W PSU

thank you!

Probably the PSU. In the morning, before you try to turn on the machine, pull the AC power cord out for 10 seconds. Plug it in. If the machine starts normally, you have a flaky PSU.

I have a Samsung 26 inch and when I boot, I see my system automatically switching between the different input signals to detect the active one I guess.

Whenever cold booting, it kept on switching without detecting and selecting the correct input signal.

It might sound strange, but since I made sure the cable from my screen to my gpu and the power cable from my screen are as good as possible attached, I don't have that problem anymore.

The exact explanation why this seems to solve the problem is beyond my understanding, but you could try it.