When connecting power supply the LED on the power supply and on the laptop flasshes at a rate of 2 times per second and laptop will not boot. Have checked output voltage of power supply which seems okay. With battery removed the symptoms are the same.
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Re: PC Will not boot
This flashing will indicate the problem to somebody who knows the flash code, the only people will probably be samsung, manufacturers are reluctant to publish these sort of things; for their own reasons.
My guess is a processor or motherboard fault, but these replacements can become more expensive than a replacement notebook in some cases.
It will probably be worth your while getting in touch with their support team
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Depends on how fast you're seeing. Cheap LED power supplies are what we call, "half wave". This means that they only work on half the AC cycle, and do blink 25 or 30 times per second (depending on where you are). If that's what you're seeing, it would be normal.
If they're blinking at some other rate, do you have them on a dimmer? Some dimmers don't get along well with LED power supplies, and blink at 1 to 10 per second.
I just fixed a D610 belonging to a customer. Before when i press the power button the caps-lock led flasshes 10X then goes off again. I opened the memory compartment beneath the laptop and replaced the memory and this time the power came on but the screen has lines and the writings can't be seen so i opened the keyboard and there is another memory there too so i removed it and this time the pc came on well and booted. So this problem is from the memory. Anyone having a 10X-CAPS-lock flash should check and replace both memories.
HP xw6200 Workstation - Diagnostic LED Code: Four Flashes
When the workstation is powered on, the front LED
might flash red four times, once per second, followed by a two second
The front LED flashing four times is a sign of a
To fix this issue, complete the following
Open the access panel, and check to see if the
four-wire power supply cable is properly connected to the system board.
There may be a faulty device. Locate it by removing
all devices and then reinstalling them one at a time until the workstation
fails. Replace the device causing the failure. Continue adding devices to ensure
all are functioning properly.
Verify the power supply functionality, as
Disconnect AC power.
Remove all internal power supply cables from the
Plug in AC power.
If the power supply fan spins, and the BIST
LED illuminates, then the power supply is good. Replace the system board.
If the power supply fan does not spin, or the
BIST LED does not illuminate, replace the power
If the led on the power supply turns off after connecting it to your laptop, the problem most likely lies with the power supply especially if the machine will run on battery power. This can be tested by
1. Turn the laptop off.
2. Remove the battery and power supply plug.
3. Press and hold the power button for at least 15 seconds to reset the laptop.
4. Replace the power supply plug into the laptop without replacing the battery.
5. If the computer will not start and there are no lights turning on on the laptop the power supply is bad.
6. Replace the battery and attempt to start the machine both with and without the power supply plugged in.
Flickering LED means power supply is overloaded with something. It might be inside of the supply, but sometimes it is something else. Try that: 1. Disconnect everything from the motherboard except power supply and power button; 2. Disconnect all power connectors from all drives; 2. Remove any cards from the motherboard so all you have is power supply and motherboard with CPU and RAM, nothing else. You can keep connected the monitor and keyboard; 3. Press Power button. Will motherboard turn on normally?
If no - check electrolytic capacitors especially around the CPU, if some of them are "popped" replace them. If yes - connect drives and cards one per time to localize the problem.
This type of problem generally occurs when adoptor stops working and battery goes down. Show first of all check your power adoptor, its working or not, to check-out remove battery and use power adoptor then try to boot. If there is power led on means adoptor is ok otherwise try to reconnect and also check whether the power supply is ok for adoptor. For canfirmation use another adoptor.
If above not working then you can try to these steps:
1. Remove Power connection (Adoptor connection to Laptop).
2. Remove battery.
3. Re-Connect power to laptop.
4. Make switch on.
If above does not work then after step 2 try the followings
A. Press and hold power button for abt 20-30 secs. keep holding on and insert Power connection now if power led get on leave the button. After that it should on.
If all above didn't solve your problem, then its time to take tour of service centre.