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Laptop Power Problems, Need Advice. (Dell Inspiron 5100)

post #1 of 5
Thread Starter 
I have been doing a bit of research on this and really can't figure out the problem so I thought it's about time I asked our experienced members for a little bit of help with this!

A family friend gave me his laptop a few weeks ago as he could not figure out what was wrong with it and had no warranty. Knowing I knew a bit about technology he said "Take this, if you fix it then you can keep it, it will be a good reward for you if it's not too expensive to fix".

The laptops is a Dell Inspiron 5100.

The current problem is that it will not turn on.

When the laptop in not plugged in through the mains nothing happens, when it is plugged in from the mains socket the laptop displays a green flashing power light and a amber flashing battery light.
I removed the battery and tried to boot directly from the main house socket and it still does not turn on and still displays a battery problem.

The laptop has two sticks of ram. I removed them and tried to boot it using only one stick at a time, testing both in each DIMM slot, this did nothing.

It DID actually turn on around 3-4 times during the entire time of tyring to fix it. Each time it turned on, displayed the bios screen and then displayed some typical 'crash' lines (if you know what I mean?) and then switched itself off.

What I think may be the problem:
Motherboard (power regulation section)
Power Adapter
Chris-PC
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Chris-PC
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Intel Core i7-920 Gigabyte GA-EX58-UD3R HIS R9 280X IceQ X2 Turbo OC 6GB DDR3 SuperTalent 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 250GB EVO SSD (Internal) 2TB WD Black HDD (Internal) 4TB WD My Book HDD (External) LG 18X DVD-RW 
CoolingCoolingOSMonitor
Antec TruQuiet 140mm (X5) Antec TruQuiet 120mm (X2) Windows 10 Pro 64-bit 23" Samsung 2333HD 1080p 
KeyboardPowerCaseMouse
Saitek Eclipse II XFX Pro 650W Core Edition Corsair Carbide 300R Logitech MX518 
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post #2 of 5
If it did turn on my guess is that it's not something related to the power supply, unless it has some intermittent short (and in this case it probably wouldn't stop each time at the same spot). It's an easy fix to try if the power adapter is the culprit, simply connect a multimeter to see if the voltage is right. Also you should test the voltages under load which means you'd have to remove the isolation on the power wire so that the lead conductors are accessible.

If the brick is good, then it must be something inside. Remove DVD, HDD, all but one RAM stick, battery and check for signs of burnt or shorts on the motherboard, if it's not the board then it's fixable for (relatively) cheap.

cheers
Centurion
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Centurion
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Corsair Force 3 TRUE Win 7 Pro x64 ACER 23" TN  
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post #3 of 5
Thread Starter 
I just bought a multimeter and will test the volts in a few days. Thanks for your reply. Any idea what volts I should be looking for? I am no electrician!
Chris-PC
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-920 Gigabyte GA-EX58-UD3R HIS R9 280X IceQ X2 Turbo OC 6GB DDR3 SuperTalent 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 250GB EVO SSD (Internal) 2TB WD Black HDD (Internal) 4TB WD My Book HDD (External) LG 18X DVD-RW 
CoolingCoolingOSMonitor
Antec TruQuiet 140mm (X5) Antec TruQuiet 120mm (X2) Windows 10 Pro 64-bit 23" Samsung 2333HD 1080p 
KeyboardPowerCaseMouse
Saitek Eclipse II XFX Pro 650W Core Edition Corsair Carbide 300R Logitech MX518 
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SteelSeries QcK+ (XL) Epiphany Acoustics EHP-02 AMP + DAC Audio-Technica ATH-M50X 
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Chris-PC
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-920 Gigabyte GA-EX58-UD3R HIS R9 280X IceQ X2 Turbo OC 6GB DDR3 SuperTalent 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 250GB EVO SSD (Internal) 2TB WD Black HDD (Internal) 4TB WD My Book HDD (External) LG 18X DVD-RW 
CoolingCoolingOSMonitor
Antec TruQuiet 140mm (X5) Antec TruQuiet 120mm (X2) Windows 10 Pro 64-bit 23" Samsung 2333HD 1080p 
KeyboardPowerCaseMouse
Saitek Eclipse II XFX Pro 650W Core Edition Corsair Carbide 300R Logitech MX518 
Mouse PadAudioAudio
SteelSeries QcK+ (XL) Epiphany Acoustics EHP-02 AMP + DAC Audio-Technica ATH-M50X 
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post #4 of 5
The voltage you're searching for must be written on the brick. I've googled a bit and it seems the brick outputs +20VDC ebay link
Centurion
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 940 @3.3GHz 1.25V Gigabyte 790X-DS4 XFX 5850 8GB OCZ DDR2-800 
Hard DriveCoolingOSMonitor
Corsair Force 3 TRUE Win 7 Pro x64 ACER 23" TN  
PowerCase
400W Silverstone Strider Antec P182 
  hide details  
Reply
Centurion
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 940 @3.3GHz 1.25V Gigabyte 790X-DS4 XFX 5850 8GB OCZ DDR2-800 
Hard DriveCoolingOSMonitor
Corsair Force 3 TRUE Win 7 Pro x64 ACER 23" TN  
PowerCase
400W Silverstone Strider Antec P182 
  hide details  
Reply
post #5 of 5
Thread Starter 
Thanks mate. I shall take a look on the adapter when I get home.
Chris-PC
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-920 Gigabyte GA-EX58-UD3R HIS R9 280X IceQ X2 Turbo OC 6GB DDR3 SuperTalent 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 250GB EVO SSD (Internal) 2TB WD Black HDD (Internal) 4TB WD My Book HDD (External) LG 18X DVD-RW 
CoolingCoolingOSMonitor
Antec TruQuiet 140mm (X5) Antec TruQuiet 120mm (X2) Windows 10 Pro 64-bit 23" Samsung 2333HD 1080p 
KeyboardPowerCaseMouse
Saitek Eclipse II XFX Pro 650W Core Edition Corsair Carbide 300R Logitech MX518 
Mouse PadAudioAudio
SteelSeries QcK+ (XL) Epiphany Acoustics EHP-02 AMP + DAC Audio-Technica ATH-M50X 
  hide details  
Reply
Chris-PC
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-920 Gigabyte GA-EX58-UD3R HIS R9 280X IceQ X2 Turbo OC 6GB DDR3 SuperTalent 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 250GB EVO SSD (Internal) 2TB WD Black HDD (Internal) 4TB WD My Book HDD (External) LG 18X DVD-RW 
CoolingCoolingOSMonitor
Antec TruQuiet 140mm (X5) Antec TruQuiet 120mm (X2) Windows 10 Pro 64-bit 23" Samsung 2333HD 1080p 
KeyboardPowerCaseMouse
Saitek Eclipse II XFX Pro 650W Core Edition Corsair Carbide 300R Logitech MX518 
Mouse PadAudioAudio
SteelSeries QcK+ (XL) Epiphany Acoustics EHP-02 AMP + DAC Audio-Technica ATH-M50X 
  hide details  
Reply
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