my cpu usage stays at around 80%

April 2, 2011 at 04:20:47
Specs: Windows XP service pack 2, intel pentium 4/500mb
i am using windows xp service pack 2 and intel pentium 4 IBM lenovo thinkcenter.. i found a file in my flash drive that had the icon of a shortcut folder. When i opened it, a DOS window appeared and a few seconds later the speed of my processor increased and the cpu usage was around 80% even though my computer was idle that time. i scanned the system using symantec antivirus and nod 32 but they didnot showed any infected file. After that i installed a new copy of window xp. but it didnt resolved the problem. The cpu usage always stays at around 80%. In windows task manager there is process named 'nhtoav.exe' thats using all cpu usage and this process doesnt end.

Please help me with this as this is slowing down my system's performance and making the processor work unnessesarily and due to it if i attach any removable drive and and then try to safely remove it, i get this message 'The device 'Generic volume' cannot be stopped right now. Try stopping the device later.' and because of this the data copied in it turns into shortcuts and doesnt open.

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April 3, 2011 at 16:22:23
Run these 2 programs for beginners.

Malwarebytes' Anti-Malware
Error codes
Common Issues, Questions, and their Solutions, Frequently Asked Questions.
VIPRE Rescue Program
Try it in Safe mode.
If it won't run, rename the downloaded mbam-setup.exe file to mb.exe to help work around certain malware that will block it from being run.
If it still will not run.
1: Go to Control Panel > Programs and Features and uninstall Malwarebytes.
Next redownload Malwarebytes but rename it before you download it to your desktop. As you are in the process of downloading when you get to the point that the "enter name of file to save to" box appears, in the "filename" slot, rename mbam-setup.exe to something.exe, then click Save.
If it installed but will not run, navigate to this folder:
2: C:\Programs Files\Malwarebytes' AntiMalware
At the top of the page, Tools > Folder Options > View, click > Show hidden files and folders and untick > Hide extensions for known file types.
How to see hidden files in Windows
Rename all the .exe files in the Malwarebytes' Anti-Malware folder and try to run it again.
When it opens, update 1st.
If it won't update after installing, update manually.
Download & install.


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