I have 2 Samsung 500gb SATA HDD and a SATA DVDRW(asus) and a 80gb Maxtor HDD, 3gb ddr2 ram, 2.93ghz core2duo, I use windows 7 pro. My BIOS detects everything fine, however windows cannot detect my IDE HDD, it doesn't show in explorer, disk management, or device manager, however when i scan for hardware changes in device management the HDD does show up, and goes away again after I reboot or i turn off my PC, for now I am using devcon and assigned a command to check for hardware changes, and made into a .bat file, and have it run automatically at system startup, but devcon pops out a UAC message everytime. So how do I get windows to detect my HDD like normal, or at least disable UAC for devcon only(and not other applications).

Please read my answer in your other post (http://social.technet.microsoft.com/Forums/en-US/w7itprohardware/thread/f3d1e720-9f8f-4c09-b7ca-08f11e6d6cba) Please be notified doubleposting/crossposting is not considered good behaviour on most internet forums! MCSA/MCTS/MCP

What is the model of your motherboard? When the HDD shows up, in Device Manager please right-click on the entry and choose Uninstall. Then restart the computer and check if the issue is resolved. If the issue persists, please download the latest Windows 7 compatible IDE controller driver from the motherboard manufacturer’s website.Arthur Xie - MSFT