I'm using Windows 7 Ultimate 32 bit on a 3 drive desktop PC, using Bitlocker to encrypt drives D and E. After several weeks without any issues I'm now finding that every time I unlock drive D after booting up I get a message saying there are disk errors and asking me whether I want to scan and fix drive D or continue without doing so. If I confirm a scan and fix, the PC will take about 90 minutes to complete the task but then report that no errors are to be found, yet the next time I reboot the machine, exactly the same message appears. There have been no changes to the software or hardware configuration. If I continue but ignore the 'error' there's no problem until a scheduled backup to drive E is due, which then fails, telling me it can't backup drive D because there are errors on it :( The drives are kept defragmented and I've run Registry Mechanic to fix any registry errors, but this hasn't eliminated the problem, and I'm now at a loss to know what to do. Does anyone have any suggestions what steps to take to resolve this?

Hi, This issue can occur by disk error or fragment on drive D. To troubleshoot the issue, please perform the following steps. 1. Run Check Disk in Command Console a. Click the Start Button, type "cmd" (without quotation marks) in the Search bar. b. Right click on the search result listed upper and click Run as Administrator. c. In the open command window, input the following command and press Enter Key after it. Chkdsk /f /r d. Please type Y and press Enter. e. Please restart the computer and let the tool check all drives on the computer. 2. Run Disk Defragment a. Click the Start Button, type Disk Defragmenter in the Search bar and press Enter. Click Continue if necessary. b. Click on Defragment Now. If the issue persists, I suggest you temporarily turn off BitLocker on drive D and turn on it for a test. Thanks.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.