Running XP Pro... Installation was fresh two weeks ago. Last time I tried, 2 days ago I think, I had IDE dvd rom and cd drives. I also had sound output. For some reason, I now have neither. Device manager reports the following message on the drivers tab of the following devices.... Device list.... IDE DVD-ROM 16X LITE-ON LTR-48246K CMI8738/C3DX PCI Audio Device Vinyl AC'97 Codec Combo Driver (WDM) All other device drivers report as expected. Uninstallation and re-installation of these devices makes no improvement. Between when I last used them and now, I discovered corruption in my FAT32 - system drive, C:. I ran CHKDSK c: /f from the run box late on the day before yesterday. It seemed to be quite damaged in terms of the fact that it fixed quite a few areas. The only thing that told me I had corruption in the first place however, was the fact that Fixblast.exe, which I ran out of pure boredom, crashed repeatedly as it scanned ks.sys in the c:\windows\system32\drivers, hence the running of CHKDSK. since then, CHKDSK reports no errors. Everything works fine, except for my completely unrelated sound devices, and my IDE CD Drives, which POST correctly. Last known good configuration does not resolve the issue. Nor does System Restore. Any idea's? Everything else seems fine, except loads of RPC DCOM interface attempts, and portscans for TCP 80, 1025, 1433, 2745, 3127, 5000, and 6129 in my firewall log. Truth be known, I'd be suprised if I didn't have the RPC DCOM events. The portscans are a new and recent event though, well, at least in therms of the fact that they are sustained and regular now. Could be a sasser variant or something. I don't know. I haven't really looked into it. I am also told by messenger Plus! on boot, that it cannot integrate with messenger, and this usually happens if messenger program files are corrupt, or another program is behaving incorrectly. any idea's?