Question about ASUS P4B266 Motherboard

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P4 comp not booting up

I had this comp from my son, built it for him 2-3 yrs back. since about 3 mths it would not boot up always. few days ago it would not boot up, not even to bios. no beeps nothing. when i disconnected power it would sometimes boot. i tried diff ps, video card, reinserted memory. yesterday i checked the bios batt and it was dead. put brand new lithium, today it is almost discharged. the only way to boot is to remove/reinsert the cpu (p4 3.06) and than it goes to bios setup. it quit while it was working for no reason, when removing cpu it will go to setuo, cpu speed must be chosen. when its running it is all ok as if nothing was wrong. any ideas? thanks

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  • krzemb Feb 14, 2008

    it is the P4T533 C mobo

  • krzemb Feb 15, 2008

    it will boot only if i take out the processor and reinsert it. it will boot to bios, i have to set the right processor speed, save to bios and than it works fine for about 10 minutes. it than just quits and have to start the whole process over. i do not have the same processor and memory, do not want buy as I can not use it later. tried different p/s, video - no change.

  • Gus1966 Feb 23, 2008

    My problem is similar, it gets past the bios, but when it's time for Windows XP Pro to start - it just sits there with a black screen... nothing. I aslo have an Asus P4B266 with 1 gig of RAM. I've removed all PCI cards and RAM and reinstalled them one by one to see if there was a bad componant, but nothing worked.


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Get working processor like that of your son's system and working ram, remove both the processor and ram on the system and substitute with the new ones and try booting.


Posted on Feb 15, 2008

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  • IKECHUKWU EKWEKE Feb 15, 2008

    since it could try booting when power cable is disconnected, i think your processor is having problem.

  • IKECHUKWU EKWEKE Feb 15, 2008

    try as i said

  • IKECHUKWU EKWEKE Feb 15, 2008



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