On 1/4/2013 5:56 PM, klem kedidelhopper wrote:
On Jan 4, 9:56 am, chuck wrote:
On Thu, 3 Jan 2013 21:28:50 -0800 (PST), klem kedidelhopper









wrote:
This is my wife's laptop which I posted recently. It had somehow
mysteriously "acquired" an unknown CMOS password which was preventing
me from getting through post and into boot. I believe that it was Jeff
who found a thread on another group which talked about this very thing
and offered a procedure for resolving it. I performed the procedure
and it cleared the password, (or whatever it was that was blocking the
boot sequence). I was very grateful for that help. After doing this
though the computer seemed flaky, freezing at times,etc, So we dumped
the hard drive and reloaded Windows. Now it seems to work fairly well
on battery, however most times, (but not always) oddly plugging the
power supply in will cause the computer to freeze. It is then
necessary to do a hard power down and boot back up with just battery.
This has always seemed to work. Most times though if the power cord is
connected it will either not boot, or it will boot, let you do a
couple of things like maybe get to a Website, and then perhaps a
couple of more keystrokes and then it will freeze. I have repeated
this problem many times now since clearing the phantom password and it
seems to be consistently tied into operating on AC power. Does anyone
have any ideas about this? Thanks, Lenny

Have you cleaned out the cpu heatsink fins or is the cpu fan not
working? The cpu runs faster when plugged into power and might be
overheating. Chuck
When I had it apart to reset the Eprom the fan and heat sink looked
pretty clean. I think I'll look at the power supply output on the
scope and while observing it I'll load it and see if anything happens.
If you guys have any more ideas though, I'm all ears. Lenny.

Did you replace the backup battery?