it's a couple of day that I'm fighting with my PC. Every time I reboot a message appears on the scrren: "C:\windows\system32\xtemp1.exe The CPU NTVDM ha encountered an error. CS 0dc8 IP: 0275 ... OP: 63 6b 6772 6 f.
It follows another identical message with xtemp2.exe.
I've read something on the net and it seems to be a malware, but neither with my Norton antivirus neither with Spyboot I solved the problem. Moreover yeserday I was not allowed to make any internet connection to useful sites (i.e. Lavasoft to download updates). I had to use another PC to download Combofix. I used it and at least the internet ploblem seems to be solved, but the strange messages at Windows start-up are still there.
I'll attach the log file produced by Combofix. I hope this could helphttp://www.bleepingcomputer.com/forums/style_images/bc/folder_post_icons/icon9.gif... Thanks!