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Windows 7: Toshiba laptop powers up briefly and shuts down

20 Sep 2012   #1

windows 7 64 pro and windows xp pro
Toshiba laptop powers up briefly and shuts down

I have a Toshiba L305D S5895 laptop. Hdd=250, Mem=2GB, Windows Vista upgrd to Windows 7 Hm prem 64bit.
System power indicators does not light up except when both battery and AC are connected. When one of them (the Battery or the AC adapter) alone is plugged in, it does not light up.
When both is plugged and I hit the switch, it starts briefly showing the Toshiba logo and then shuts down and the light goes off. I have to unplug both batt and AC and reconnect them again to get the power lights up. Battery is abt 11% charge and the AC adapter is ok when I tested it on a multimeter.
I did a reset of BIOS by by pressing Switch for 30 secs before reconnecting power, but it did not help.
I need some help friends.

My System SpecsSystem Spec

21 Sep 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1

Hello Koofah. Welcome to the forum.

A dead or dying battery will cause this type of problem, and it will cause the problem even when the power supply is plugged in. So normally I would suggest replacing the battery.

What disturbs me is that the laptop does not run on the power supply with the battery removed (as I'm sure you already know). That raises the possibility that there is a defect in the power switching circuitry on the motherboard, and much more difficult problem to diagnose and fix.

There is a possibility that the power supply went bad and took the battery with it, rendering both devices defective at the same time. But that is a bit of a stretch.
Are you still using the original OEM power supply and battery that came with the laptop? How old are they?

It would be more likely if the PS & battery were aftermarket replacements.
My System SpecsSystem Spec
21 Sep 2012   #3

Windows 7 Ultimate x64

Best option would be to look for the guy near you having same lappy ! !
Borrow things to chk what is the real problem !
My System SpecsSystem Spec

21 Sep 2012   #4

windows 7 64 pro and windows xp pro

Batteryand AC adapter are about 3 yrs.
Strangely, aftr plugging for about 24 hrs the system booted up into windows and battery chrg showed 0% and charging. However the system shutdown abruptly after a few minutes. I noticed that my upgrade from vista actually did a dual-boot instead of a clean install. i pulled out the hdd and power up into cmos, but it stayed on briefly and shutdown.
I will chk out your suggestions and get back to you. thanks
My System SpecsSystem Spec
21 Sep 2012   #5

win7 home premium 32bit OEM System Builder Pack

nieghbors HP did samething, turned out external power was putting out the voltage, but not the amps to power it. battery went dead, and it wouldnt stay powered on. i checked external power and it had 18 volts, then checked amperage, .01 milliamps. he had to replace external power.
My System SpecsSystem Spec

 Toshiba laptop powers up briefly and shuts down

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