A few weeks ago a friend borrowed my laptop (Dell Vostro 1510, running Windows Vista) and I believe he infected it with some kind of virus because all sorts of strange things started happening. In the end I couldn't manage to get a lot of different programmes to work. In the end I did a backup of all my data onto an external hard-drive and completely wiped the computer and reinstalled it. I had run a lot of virus and spyware scans, which found nothing, but even those programmes had been disabled and I was unable to turn my firewall back on. It also kept saying I didn't have administrator privileges to do various things. Anyway...whatever it was, I reinstalled everything from scratch, successfully. I did not transfer all my data straight back across, just my work documents and my photos, as I imagine I have backed up the virus too and I'm not sure what to do about that.
All has been fine so far, until recently, every time I reboot, I get the message "One of your drives needs to be checked for consistency." I have tried rebooting with and without the external hard drive and I'm pretty sure this only happens when my external hard drive (with the data back up on it) is plugged in. The message is that the file system is FAT32, volume serial number 318B-89F4 and it takes about 20 mins to run the check and then says that it has found no problems.
I tried typing fsutil dirty query G: in cmd and it came back with the message "The FSUTIL utility requires that you have administrative privileges" which has me worried because I DO have administrative privileges; I am the only user on this laptop, and it is reminiscent of all that went wrong last time!
If anyone has any ideas or can help me, I am so grateful.
Thanks so much in advance,