I have four partions out of two drives. When running Windows 7: C is Windows 7, D is Data, E is HP Recovery and G is Vista. However, yesterday when i booted windows 7 the vista and windows 7 drives renamed to local disk and now there is an error message when trying to use them. I can log in, even save to my user folders, but when i try to delete something or explore c or g through computer i get the message "C is not accessible. Access denied". I am an administrator in windows 7 and vista. vista is doing the same. I don't know why this is happening. Also, i am having problems with moving the mouse. When i put my finger on the touchpad the mouse does not move. i have a hp pavillion dv9565ea. It came preinstallled with vista home premium. It now has that and windows 7 on. The recovery is a partion of the vista drive. Windows 7 is a partion of the data drive. I also have very low space on the windows 7 drive at the moment, however i cannot run disk cleanup or delete files. Disk cleanup says make sure there is a disk in the drive. I have never opened up the caseing of the computer so how could the drive not be there? I cannot copy files or folders on these drives either. I think it might be a virus. On win 7 i have security essentials and it was working fine. Now it gets errors checking for updates. Mcafee viruscan was the software on the vista partion but that comes up with an error message saying it's corrrupt and please reinstall. Something about it not working - don't know why - and then there is no security. I have tried safe mode. same happens. This has never happened before yesterday evening - i was in windows 7 at the time. Any ideas? Please help!

This isn't a virus, there seems to be a bug which has hit me on two seperate machines running the release candidate this evening. The problem seems to be that the security descriptors for the drive are suddenly lost. I fixed this by right clicking on the drive and selecting properties and then clicking on the security tab, from here you can re-add the user accounts and re-set the permisions (usually SYSTEM, Administrators, Authenticatd Users and Users - use another drvie as a template). There is nothing I can find in the error logs as to what happened.Hopefuly someone from MS can verify this bug and get it fixed ASAP.

I too am having the same problem. Actually have had it on two different laptops, both running Windows 7 RC. Formatted the first and reinstalled Win7. I am currently still working on the second laptop, trying to get it back to working condition. If not, I have an image I can restore to (luckily I made my weekly backups last night).After an hour of messing with it, I decided to restore uing last night's image. Everything is back to working, but I wonder how long it will be before this bites me again!David