Attempt to access invalid address

Todays morning, after one hour of work I needed to restart computer becouse I was not able to disconnect from internet. There was no activity but it was not disconnecting. After that I can't start any DOS program on this computer, any dclick in icon to program is giving error: "Attempt to access invalid address". When I try to run DOS program from command prompt window I see : "Cannot execute program". I scan comp. for viruses - it did not find anything. Any sug.? Andrew

I currently have a similar problem to what you descibed. I found that if I start Windows in the "safe" mode I can then access what I need to. This is not a satisfactory solution for me. I would greatly appreciate any better cures if you are now aware of any. Thanks! Bill Mason

I had to reinstall win2000. Andrew

Same symptoms, XP Pro. User reported a few xxx popups while downloading NAV2004 just prior to problem. Checked her index.dat file and found NO record of browsing anything but okay sites. Tried NAV2004, Adaware, Spybot, TrojanHunter, turning off servies, msconfig, logged in as Administrator, checked config.nt and autoexec.nt, nothing worked. Finally had to use XP system restore and roll back 3 days. Maybe something nailed the Environment Variables ? Didn't think to check those until after restore.

same prob. here with win xp home, but sometime back i turned off my system restore for some reason and forget to turned it on, so now i cannot roll back, so what do now? any suggestions. manu