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LANPARTY UT nF4 Ultra-D Boot Problems


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I have recently built a new system, but I am having problems getting to run properly. If you turn the power supply off and then switch it back on then power on the machine it will boot perfectly. However if you then restart the machine or power off the machine (not the power supply) it will fail to boot until you switch off the power supply.

 

I thought that it may have been the power supply but since upgrading to the tagan I have seem no improvements, any advice/suggestions would be greatly appreciated.

 

Cheers

 

Aaron

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Wow I'm really stumped since it shouldn't matter if your PSU was turned off first or not.

 

What do you have your USB power on settings at? Maybe try turning them to +5V as opposed to +5VSB and see if that helps. Same for PS/2 power. Maybe some device that 'starts' once your computer starts like a USB flash drive is causing some issue with the +5VSB rail.

 

Also what are your CPU VID / Startup VID settings? Maybe if you turn up the startup vid a bit that would help.

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I've had similar issues with my system. Only it appears to have something to do with changing bios settings. Sometimes if I change some bios settings and then try to reboot..it'll freeze. If I shut off the psu and then try again...it works perfect.

 

I did track down part of it from needing more chipset voltage once I passed the 275fsb mark. I'm now at 286 and running smooth ;)

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I have the opposite problem initially when I first install the mb. When cold boot it will BSOD and a warm reboot (with reset switch) will solve the problem. Thereafter restart from WinXP will pose no problem at all too.

 

But it finally "run in" with flashing to latest official BIOS, changing some jumpers (the 5V KB things). Now running sweet. :sweat: Have some patient on this babe. :nod:

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How many Watts is your power supplies? Angry_games says a 480W PSU is required.

 

I have an OCZ Powerstream 420w. It's plenty for my system also. I don't run SLI, and only have 2 hdd's and a cdrom. There are guys on XtremeSystems/HardForums that run more hardware on the same psu as I do and they have no problems.

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Cheers for the reply guys,

 

The PS/2 and USB power select were both set to the default 5V

PSU is a Tagan TG480-U01 480 Watts (Bought at great expense because initially thought it was down to a cheaper PSU)

 

Just changed the PS/2 and USB power select jumpers to +5VSB from the default +5V and it seems to be up and working now.

 

Can i just ask what is the difference between these two settings and the what does the SB stands for?

 

Cheers

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SB stands for 'standby' if a USB port is connected to +5VSB it means the device has power when the computer is off. The problem is the +5VSB rail on most modern PSUs is only 2A vs. the +5 rail which can be 50A or higher.

 

What do you have the CPU voltage, and the startup VID set to in the BIOS? Upping the startup vid a little bit may help.

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