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Thanks for the idéa. We managed to kill two processes with the same name 20 minutes ago, and for the moment it has not started again. <br />
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But I will try a search for file anyway. I get back with more info.
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always start by locating the file that you are suspicious of. It's location can often clear up the concern or point you in the right direction.
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The customer says the problem is gone by itself. So for the moment I can not try or search for anything, but as soon as it gets back, I will try your excellent suggestions. <br />
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Thanks a lot so far.
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You should still search for the file to idebtify it in case it occurs again.
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You can still run the tool for diligence checks to make sure it does not really surface or running in the background stealthily. For considerations
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<div class="content wysiwyg-content">
I have a client with a Win XP Pro standalone PC. <br />
<br />
He has a process named <b>prvSGxBA,exe</b> which takes 100 % of his CPU, and killing it in the task manager only result in that it restarting again. <br />
<br />
I have tried F-secures online scanner but with no success. Some other stuff were found and cleaned but not this problem. <br />
<br />
Any suggestions?
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I have a client with a Win XP Pro standalone PC. 

He has a process named prvSGxBA,exe which takes 100 % of his CPU, and killing it in the task manager only result in that it restarting again. 

I have tried F-secures online scanner but with no success. Some other stuff were found and cleaned but not this problem. 

Any suggestions?

Process prvSGxBA.exe 100 % CPU, is this a virus?

Anti-virus software was originally developed to detect and remove computer viruses. However, with the proliferation of other kinds of malware, antivirus software started to provide protection from other computer threats. In particular, modern antivirus software can protect from malicious browser helper objects (BHOs), browser hijackers, ransomware, keyloggers, backdoors, rootkits, trojan horses, worms, malicious layered service providers (LSPs), dialers, fraud tools, adware and spyware. Some products also include protection from other computer threats, such as infected and malicious URLs, spam, scam and phishing attacks, online identity theft (privacy), online banking attacks, social engineering techniques, Advanced Persistent Threat (APT), botnets and DDoS attacks.

Anti-Virus Apps

Spyware is software that aims to gather information about a person or organization without their knowledge and that may send such information to another entity without the consumer's consent, or that asserts control over a computer without the consumer's knowledge; it has also come to include programs that engage in various kinds of electronic fraud. Anti-spyware is software that removes or blocks that software; some common vendors include Malwarebytes, McAfee, Spybot-Search and Destroy, Ad-Aware and BitDefender.

Anti-Spyware

Microsoft Windows XP is the sixth release of the NT series of operating systems, and was the first to be marketed in a variety of editions: XP Home and XP Professional, designed for business and power users. The advanced features in XP Professional are generally disabled in Home Edition, but are there and can be activated. There were two 64-bit editions, an embedded edition and a tablet edition.