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Hi,<br />
&nbsp;My laptop shows an error during XP startup. &nbsp;&quot;TPSMain.exe not able to start due to CpuPerf.dll not found&quot;. <br />
I have tried the Toshiba web site and &nbsp;I can not find a comprehensive fix . I have run C Cleaner and PCTOOLs Registry Mechanic. Also run Spyware Doctor and Avast without sign of any malware using these programs. &nbsp;I would appreciate advice in regarding repair of this part of the OS. &nbsp;
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Hi,
 My laptop shows an error during XP startup.  "TPSMain.exe not able to start due to CpuPerf.dll not found". 
I have tried the Toshiba web site and  I can not find a comprehensive fix . I have run C Cleaner and PCTOOLs Registry Mechanic. Also run Spyware Doctor and Avast without sign of any malware using these programs.  I would appreciate advice in regarding repair of this part of the OS.  

Error during XP startup with a Toshiba  Portege R500.

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.

Windows XP

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.

Microsoft Legacy OS

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.