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Urgent! Strange Boot Problem

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5 replies

by jarrett

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So I'm trying to get this computer prepared to get to a customer on Friday and as I'm building it I do my normal tests. Early on, I notice that it seems to be shorting out for some reason. I just plug the 24 power connector and the CPU fan in to test its ability to boot and it starts and then stops and starts and stops a few more times on its own. I kill the power. I then plug in the CPU 4 pin and now it starts, stops, starts and proceeds to boot. I know something isn't right here but what is it? I took the Mobo out of the case and ran it with two separate PSUs. Everything is the same. I realize that probably means Mobo problems but I NEED to get this thing to the customer by Friday except that I don't want to sell a lemon. Is this just idiosyncratic of the Mobo or imminent failure? I've got to make a quick decision. HELP!

5 replies

by rob miners

You could try reseating the CPU. Or test with another. The 24 Pin Connector the CPU Fan and the 4 Pin CPU Connector should always be attached before powering on.

by thumbsup2

Trust your instincts...... Don't let "hurry" get in your way.

If it doesn't "feel" right, chances are it has something wrong. Wouldn't it be better to delay delivery because you received faulty parts than to actually deliver the thing and have it go bad while the customer is using it? Your reputation as a system builder is at stake.

by jarrett

Sadly my reputation for delivering on time is equally at stake and this customer is picky as is. I think I have it fixed. I put it back together, removed the CMOS battery for about five minutes and now, even though there is a 1/2 delay on booting, it seems to be ok. I'm still not confident but I appreciate everyone's prompt feedback. I'll give you an update once I know more.

by jbafile

I have encountered this same type of issue in the past. A few times, the powering up/down issue was coming from faulty RAM. Have you tried cleaning/replacing the RAM?

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