<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:10pt"><div>Hi,</div><div><br></div><div>WinXP having Standard PC CPU model continuously restarts while booting and have seen BSOD. Please refer attached screenshots.</div><div><br></div><div>Initially, WnXP guest has MPS Uniprocessor PC and I'm having problem while doing shutdown. It hangs displaying "Its now safe to turn your computer"</div><div>I have read below article that If we change CPU model to Standard PC and install NT APM legacy driver, guest will be shutdown automatically.</div><div><a href="http://support.microsoft.com/kb/810903">http://support.microsoft.com/kb/810903</a> <br></div><div><br></div><div>By doing this it worked fine with different WinXP guest earlier. If i do the same to my WinXP guest I'm seeing above specified issue.</div><div>Instead of changing to Standard PC, I thought of changing to ACPI complaint. </div><div>But after reading below article, I understood we can't change CPU models(MPS Uniprocessor PC/ MPS Multiprocessor PC / Standard PC) to ACPI simply by Update Driver.</div><div><span style="font-size:12.0pt;font-family:"Times New Roman","serif"; mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-ansi-language: EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA"><a href="http://support.microsoft.com/kb/309283">http://support.microsoft.com/kb/309283</a></span><br></div><div><br></div><div>I have noticed this behaviour even with WinXP guest launched from Virt-manager on Centos 6.2.</div><div><br></div><div>I can't reinstall WinXP guest OS to specify ACPI. </div><div>Is there anyway to change CPU model as ACPI complaint from MPS uniprocessor PC?</div><div><br></div><div><br></div><div>Thank you for your help.</div><div><br></div><div><br></div><div>Regards,</div><div>Naga.</div></div></body></html>