Laptop won't power on, Can you help?

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:hhhmmmHi all,

My friends laptop won't power on and he asked me if i could help but i'm kinda stumped too so i'm hoping someone here can maybe make a suggestion. Thx in advance for any advice given.

When i press the power on button, the blue power led on the front of the machine flashes 3 times then goes off.
There is no movement from the fan, hard drive, or any sounds at all. The screen just stays blank too.

It's a Compaq Presario v6500

I've tried a good known working charger and cables.
I've tried a good known replacement battery.
I've taken out the ram chips one by one and tried swapping them around.
I've disconnected the wireless card inside.
I've taken the hard drive out and tested it and it's fine.

I'm not sure what else I can test before he takes it to a shop and pays a whack of money to get it fixed.
If you've any suggestions at all then please fire away. Cheers

 

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If you remove the battery and plug the laptop into the mains and press the power button - does it still do the same?

NB

 

Also, have you tried removing all the mem chips and powering on?

NB

 

Just tried both suggestions.

Removing the battery and using the power mains shows up no lights whatsoever when i press the power button.

Also, removed the mem chips and tried but no difference there either.

This is a real head scratcher for me.......

 

I agree with Sparky.

 

Given that this laptop is around 3+years old do any of you feel it's worth getting the board replaced or do you think it's a better idea just to transfer the data on the drive to another machine?

Given the price of laptops nowadays, i'm thinking a new machine under warranty would probably be the better option here.

 

Yeps. Replacing the mobo on a laptop is a PITA. If it was less than two years old it would be worth it, but 3 years? Fuhgeddabahdit

 

I agree with Sparky, but this is a long shot have you tried cleaning any dust out with compressed air just incase its a heat related issue?

 

Maybe try fresh thermal paste on the processor ???

Laptops can overheat so easily.