This problem seems to be caused either by malware (virus or spyware etc), or by software following a Windows update or some other software installation or uninstallation (particularly HP, Norton or QuickTime software) trying to check for removable media that isn't there (e.g. disc in DVD drive or card in card reader), when it shouldn't be doing that check.
If you have not recently done a Windows update, or software, install/uninstall as listed above, you may have a malware problem.
Scan your computer with a virus checker and anti-spyware etc - try more than one product (e.g. there's also NOD32 ESET), clean any infections and reboot.
Next post in CH's malware section.