From owner-freebsd-questions@FreeBSD.ORG Tue Feb 26 01:38:10 2008 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A41EC16A400 for ; Tue, 26 Feb 2008 01:38:10 +0000 (UTC) (envelope-from tfcheng@gmail.com) Received: from wf-out-1314.google.com (wf-out-1314.google.com [209.85.200.173]) by mx1.freebsd.org (Postfix) with ESMTP id 7A1A913C447 for ; Tue, 26 Feb 2008 01:38:10 +0000 (UTC) (envelope-from tfcheng@gmail.com) Received: by wf-out-1314.google.com with SMTP id 25so1167918wfa.7 for ; Mon, 25 Feb 2008 17:38:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=Xfp5Bv7JeA24fqpZ6mgi/Mf6t/ThNtElqitdqJSti1k=; b=apYEhADOS0D/o+jyYsTcrAXhaSy2MXEanqBRRshmKSSoKClcq5bvzfeBiqL2lt5vQSAYs/YrHR4yRSsWcqfdeQLs0SpyjBkkTKP9y3uW/1/4LMIY7v9yn9JftfJHuJMeJZQUQECnJELuF7GQAJcQI1krRuC/P6lbIqeNJVacNF0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=JGcWWmQ1eXVZadnA/4qNe8C5ei8Px2BD8uCjm3rd8ZwA847hc/8C8l09cN8MgQt/TBVCtrMDQ6ijoZYvap4Jj4qecNFbIXBhVWPmkheZNh3OB6ILk4rjKjlEVnwOxrng0Z/b167GygEjWg4kTkLxe8EOjH0SK3MVimOT4b7HJv4= Received: by 10.142.232.20 with SMTP id e20mr3043317wfh.187.1203989889725; Mon, 25 Feb 2008 17:38:09 -0800 (PST) Received: by 10.143.173.2 with HTTP; Mon, 25 Feb 2008 17:38:09 -0800 (PST) Message-ID: Date: Mon, 25 Feb 2008 20:38:09 -0500 From: "Tsu-Fan Cheng" To: "Chris Whitehouse" In-Reply-To: <47C362EE.1020706@onetel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <6.0.0.22.2.20080225090234.025e4bb0@mail.computinginnovations.com> <47C362EE.1020706@onetel.com> Cc: FreeBSD Questions Subject: Re: hardware problem X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Feb 2008 01:38:10 -0000 hi guys, just take every part out and dust with a brush, reseat the m-board and hook on the power supply, switch on the power and both fans spin for quite a while, seeing this, I switch it off and start to connect all the cables. After all is done, i turn on the power again, and this time it stop again after a short spin. and I looked everywhere on the board and found some silverish dust on the board, i dust it away, but this time, the fans and the LED light on the board never spin or lit up when i switch it on, i wonder if something i did kill the power this time, any idea?? thank you for your help. TFC On Mon, Feb 25, 2008 at 7:53 PM, Chris Whitehouse wrote: > > Derek Ragona wrote: > > At 08:06 AM 2/25/2008, Tsu-Fan Cheng wrote: > >> Hi guys, > >> this is really not about freebsd per sa. But this is the only > >> computer-related forum I use. so please forgive me. > >> my desktop was relocated due to my recent moving to a new > >> apartment. After settling down at the new place, I plug in the cables > >> and the computer won't start up. I open the case and found out that > >> when i switched on the power supply from the back, the power fan and > >> cpu fan will spin for a split second then stop. I tried to debug by > >> unplugging the cables, when doing so, sometimes the fans will spin for > >> 10 seconds, maybe, but most of the time, it just stopped right after > >> the power switched on. I also try to hold down the start button on the > >> front for a while, but no good. I was told the mother board maybe > >> short-circuit. can anyone give a second opinion?? thanks!! > >> > >> TFC > > > > It sounds like you have something shorting out the motherboard. I would > > remove everything you can, all add-on cards etc. Just leave a video > > card, unless video is on the motherboard. I would disconnect all the > > drives too. The idea is to remove everything, so you can check just the > > motherboard alone. If the motherboard still won't power on, remove and > > reseat the RAM. If it still won't power up, remove and re-seat the CPU. > > > > I would guess something inside the case was moved around enough in your > > move to cause the short. > > > > -Derek > > > Agree. The symptoms, fans starting and almost immediately stopping, say > the power supply is starting, detecting a short and shutting down. If > the video card is AGP double check it is properly seated, I've had that > same result several times particularly with AGP cards lifting very > slightly at the inboard end. > > Chris > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >