You don't give much information to go on. Does this happen before Windows boots or after?
If it's before Windows, it could be that your first boot device in the BIOS either doesn't exist or is not bootable. In that case go into the BIOS and check the boot order.
If it's after Windows boots up, then, most likely some software is looking for something on a drive that doesn't exist. This could be a floppy drive or a Flash/external USB drive. Or, it could be a general failure of the CD/DVD drive.
The way to get rid of it (in Windows) would be to get rid of the app that tries to load from the non-existing device or get rid of the line in the startup sequence that tries to access the device. You could un-install the app, if you can find out what one it is, or edit the registry to remove the line that tries to access the device. Or, it may even be listed under "Startup" in the Start menu.
You could also open up the computer and check that all drive cables are properly plugged in. (Unplug and re-plug)
But before we could help much more, we'd need to know whether it happens before or after Windows starts and also, what you may have installed before this started to happen and what external devices you may have connected to the computer recently. And, preferably, without getting each bit of info 1 post at a time.
Edit - another possibility - you installed a virus checker that tries to look for viruses on a drive that doesn't exist. If you have a virus program (Norton's, MacAfee's, etc.) check the settings to make sure that any drives it tries to scan actually exist. (There's often a setting in older versions that tries to check a floppy drive.)
Last edited by Quaker; Oct 23, 2009 at 02:49 PM // 14:49..
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