hotspur

Thank you I will certainly try your suggestions. A strange thing I have noticed is that if I have the DVDs working and I shut the machine down completely for say 5 mins, it boots up OK and reads all the drives. If I leave it overnight it doesn't read them until I play around with the cables. Is it possible that temperature is affecting the system somehow? Could it be an intermittent fault on the Mobo? Thank you for your input

Thank you for your reply On boot up it shows only one device, a device which is not on my machine, a AXV cd/dvd-rom scsi cdrom device, the two which are connected are not shown. The PSU is a winpower and the spec is : 450 watts 20A @ +12v, 40A @ +5v, 28A @ +3.3v 0.5A @ -5v 0.8v @ -12v My graphics card is a NVIDIA GeForce 7300 le I have two SATA hard drives The CPU is an Intel core 2 6600 2.4 gh I have 4 gig of memory installed Thank you

Hi everyone I f I shut down my machine, the next day when I come to start up it does not recognize the dvd drives. If however I stop the machine and unplug the drives and then plug them in again all is ok. If I keep the machine running everything is ok. I have tried with just one dvd connected and the same problem. I have used different leads. The mobo is an MSI, and I am running xp pro Sometimes there is power to the drives sometimes not. But every time if I disconnect the drives and then reconnect all is ok. Until very recently it was recognizing both drives ok. The mobo is still under guarantee I am completely baffled, any help will be greatly appreciated John