A friend gave my this thing a little wile ago and it was working fine, now all the sudden it only powers up for about 3 sec. then shuts back down.. cooling fan stays off...harddrive does not make any noise...nothing on the screen. I've had just about everything out of it to trace a bad part with no luck... help!
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the d600 has a 8 pins chip,like the c600 where the pasword/faxtory setting is stored.. it's located under the tape where the pcicma socket is..close to edge of the board it sais:UPW1 I think you can use the paperclip methode like the c600 wich means short two pins ( 3& 6) while you power the lap
i had a c640 with the same issue.. the cause was a power short to the cpu.. wich meant the cpu didn't get power.. the metal base under the board gave the board to much presure the metal base was bent as soon as i took of the fan he started normal.. so what uou can do: take the fan off , and try to power up.. just a few seconds..
also the cdrom or flop can cause a short, maybe you can try that first..take them out and power up
I have more of a suspicion of the CPU fan than the hard drive, right now. If a hard drive goes bad, the system will wake up, go through it's POST (Power On Self Test), and then tell you there's an issue with the hard drive. If the CPU fan goes bad, the system turns on, sees an RPM of 0 on the fan, then turns back off. That hypothesis also fits in with the slowness you were seeing. If a CPU starts to overheat (because the fan isn't running well), it will start to throttle the clock speed down in an attempt to produce less heat. Unfortunately, it sounds like your laptop may be in need of a professional repair facility.