Lasse.exe is a backdoor trojan. You need to run an anti-vrus program in safe mode to hopefully get rid of it,but first you could go into safe mode, and click on start,run type msconfig in the box and click OK, then in the Startup tab go through the checked boxes and see if you can the the file lasse.exe because the startup menus should include it. This is because the files is an executable file (.exe) this means that it will run if told to during boot up. Hopefully you may find it in here,If it is Untick the box beside it click apply and restart. If it starst ok then amke sure you go through and av program to remove it before you do anything else. Chris at compdoctor2005@btinternet.com
Chris F, April 2008