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Sata disk gone after a warm reboot

I have a packard bell Imedia 6650 here which had a seagate 300gb sata2 disk. Disk is broken and I replaced it with a maxtor 300gb sata2 disk. If I start up the pc from a cold boot the disk is detected. Windows is installed and runs without any trouble and not getting any errors. But whenever I reboot the pc it has a chance of around 1 to 3 that it does not detect the harddrive anymore. Even if I do a warm reboot after that it still doesn't see the drive in the bios. If I shutdown the pc and do a cold boot it detects the drive again without problems.
There's no bios update availble from packard bell and I tried adepting the settings for the drive like 32bit data transfer, set it to either sata1, sata2 and both speeds but nothing seems to help.

I've tried different sata cables and the hard drive doesn't give problems in another pc.
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arjanweyts
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arjanweyts
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1 Solution
 
maramomCommented:
Try, first, clearing CMOS to clear out any possible faulty values. Also,  If the battery is dying, it may not be storing the values properly. Have you noticed the computer clock to be lagging? You can also refash with the current BIOS.

It sounds like the sata controller on the motherboard may be faulty. Try the other socket and see if there's a difference. Make sure the connection is firm. If, as you say good cables and another system shows no problems, and you have no luck with above steps, the motherboard most likely is at fault and should be replaced.
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maramomCommented:
Oh, I missed an important detail---the PSU may not have enough power to send to the drive for recognition. Even with a high wattage rating, it could be failing. Testing, if possible, with a known-good PSU (with enough power) can rule it in or out as the problem.
An online power calculator to use as a guide:
http://journeysystems.com/power_supply_calculator.php
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arjanweytsAuthor Commented:
I tried a more powerful PSU but that didn't give any improvements. I've just let it stay the way it is. It's a bit annoying but I can live with it.
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