I had a problem with my Internet Service Provider's program in that it would START up then freeze, using 100% of my CPU capacity.  Installing a new version of the APP produced the same result.  I decided to restore my system to an earlier date by clicking on "Properties", but when I TRIED I got this message, " Run a dll as an app has encountered a problem and NEEDS to close."   I then tried through Programs, Accessories, System Tools, and when I clicked on "System Restore" I got the message,  "System Restore  has encountered a problem and needs to close."   Windows does not seem to be able to find rundll.exe or rstrui.exe.  I only have the OEM restore CD, and really am not looking to reinstalling all of the files on my Hard drive.  Any suggestions?what o/s have you got?? trojan scan run it!!Who is the manufacturer of your system? Have you enabled system restore?

[glb]Flame[/glb]My system is a E Machines 1115 running Windows XP Home, build 2600, CPU is 1000Meg Intel Celeron, with 160 Meg ram and 26.4 Gig hard drive.

System restore was present and working at first, then would not set a new restore point, then disappeared.Do to have PC protection against viruses/worms/trojans?

[glb]Flame[/glb]http://housecall.trendmicro.com/

or re-boot pc and hold down the f8 KEY and chose last good config.............a winxp home user or anyone else would disable system restore for good!IMHO.....worms/trojans etc love system restore??you have options like f8 key or sfc scanow..for cpu to run at 100% is evident of a trojan......svhost /lassa exe and many more??do you have kazza or limewire/blubster on your system!