Are you running Windows 98 SECOND EDITION? If so, please install the Windows 98 Second Edition shutdown supplement from the link below:
Windows 98 Second Edition Shutdown Supplement
The EXACT error message would sure help.
Please follow the instructions in the links below. It may take a little while, but it should clean out some of the stuff causing your issues.
First, because you didn't mention it, please download, install, update, then run the free spywarer removal tools from the links below. Delete all spyware that they find..:
Ad-Aware">http://www.lavasoftusa.com/support/download/]Ad-Aware
Then I get the fatal exception notices and when I hit any key like it says too, the screen just keeps coming back. Even when I hit Alt/Ctrl/Del over and over. nothing happens so I have to shut down using the power button on the modum.
Last 3 nights I got 3 different ones each nite > 2857 > 19DF > 17CF
Using W98, IE6, Avast virus protection.

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