Startup problems

  wx622 18:39 23 Dec 2004

I have just bought a new PC from Carerra (AMD 64 3400+, 1GB Ram, Geforce 6800 Ultra, 2x 120Gb SATA HDD, Sony Multiburner). I had no problems for a week, until I added a new NEC 3500A DVD-RW drive and a new IDE HDD. I then found that everytime I switched the PC on it made a funny "wirr wirr" noise; as if it was struggling. After a couple of seconds, it resumes as normal. Now, I thought that this was down to power, so I changed the PSU and put in a 520W instead of the measly 350W they had originally put in. When I started the PC up with the new PSU, the same noises occured. Any ideas?

One other thing- the PC has 2 80mm fans in it, connected through the molex connectors from the PSU, not on the motherboard)

Help required.

  Diodorus Siculus 18:47 23 Dec 2004

What is making the noise? Could well be one of the new drives you installed that is dodgy.

  Fruit Bat /\0/\ 18:52 23 Dec 2004

Having disturbed the cables to the drives is one now catching one of the fans?

  Diemmess 19:37 23 Dec 2004

Lid off, and look for cable/fan fouling.....Then disconnect both new devices and try it.

Use a tube of paper or plastic and listen.

The noise has to be a fan, but just might be a faulty new drive bearing or even a foreign body in the burner mechaism. By this process of elimination it should be possible to pin-point the cause.

  wx622 18:38 24 Dec 2004

Unfortunately I did not explain properly. The so-called "new" ATA HDD was not "new". It was in my old PC, but is a Seagate and is only 4 months old. It makes less noise than the brand new Maxtor SATA drives.

There is no cable/fan fouling as far as I can see or hear. It is not this sort of noise. I have also tried both the "new" HDD and the new DVD-RW in another PC at work, but they do not make any noise in the new system I tried them in.

The only thing I can think of is a cable fouling in the 80mm fan in the front of the case. But why isn't it doing this all the time. (The noise stops after 2 or 3 seconds, and only when the system has been off for a long time, not after a restart etc.)

Thanks for the ideas, keep them coming please.

  wx622 18:42 24 Dec 2004

I spoke to someone recently about the problem and he said that the problem could be resolved in the bios under the voltage settings. Any ideas?

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