After a couple of years using Windows 7 on my HP G72 laptop it suddenly started freezing, but only on battery power, it was fine when on AC power. I searched many articles and tried many solutions, eventually finding that by changing my Power Manager to an HP recommended setting it appeared to cure the problem. Then I was notified on my laptop that there was an important HP BIOS update to be applied. After I applied this update my freezing problem while on battery power returned. The original fix I found no longer appears to fix the problem. Any help would be extremely welcome.
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