<html><head></head><body style="font-size:10pt;font-family:Verdana,Arial,Helvetica,sans-serif;">After a routine update my main PC will no longer boot successfully. Everything appears normal in the beginning, but then appears the following message: "22.290745 ACPI: INVALID _PCT DATA". The numbers at the beginning vary every time but the rest of the message is the same. The machine then sits there until I do CTRL+ALT+DEL whereupon the machine restarts & does the same thing, or I press the on switch of the tower & the system shuts down.<div><br></div><div>I tried a Puppy CD this morning & it booted successfully but I am very keen, nay, desperate to learn the possible causes for this error message. Searches on the web have not been helpful.</div><div><br></div><div>The system is a Pentium 4 2.8 GHz, 1GB RAM dual channel 80GB + 40 GB HDD capacity. Intel D875PBZ board. This machine has been running Debian all its life since June 2004 when I built it.</div><div><br></div><div>Any help much appreciated.</div><div><br></div><div>Gavin.</div></body></html>