Laptop dead - not powering up at all

[Alison556]

My niece has a Dell Latitude D630 laptop. It recently died a death - all we were getting was the power light coming on for a second or two, battery charging light for a second or two and then absolutely nothing - it doesn't boot up, beep or anything.

I got a manufacturer refurbished motherboard and replaced it and hoped that would fix the problem - but it hasn't. It's exactly the same.

Anyone got any ideas? Could it be the CPU?

The refurbished motherboard does have a warranty, but I don't know if it's a faulty motherboard or if it's something else.

 

[reedo_43]

Could be a memory problem. Can you pull the memory and just try one or the other sticks?

 

[Alison556]

Thanks, I tried that - it's just the same 🙁

 

[harry_r_s]

The problem may be at various places-
First check the power connector in the laptop. Is it fried or something. Because sometimes an old or ruthlessly used charger may result in current fluctuations. So check your charger too!
Check If any wires are fried.
Did you overheat the laptop. What were you doing while last running state of laptop, & how it was turned off.

 

[Alison556]

I've tried two different chargers, with and without battery. I thought if it had been a power problem, the new motherboard would have sorted that as it's all onboard?

It's my niece's so from what she said, she was using it and it just shut off and wouldn't go on again. That's why I thought it had overheated and shut off.

When I stripped it down, the heatsink was totally clogged with fluff (cleared all that).

 

[harry_r_s]

I've tried two different chargers, with and without battery. I thought if it had been a power problem, the new motherboard would have sorted that as it's all onboard?

It's my niece's so from what she said, she was using it and it just shut off and wouldn't go on again. That's why I thought it had overheated and shut off.

When I stripped it down, the heatsink was totally clogged with fluff (cleared all that).

Hmmm. may be that uncleaned sink caused overheating resulting in processor damage. Once my cpu reached 100'c with uncleaned sink at idle state. So even doing office stuff would have fried it!
and did you checked the inner area where the power cord fits in.
Also sometimes a shot between wires can cause this!
Your lappy needs a real doc So I would say, get it to a local repair shop. Coz they have tools to figure out the source of hardware problem!

 

[Alison556]

Thank you. I went into two local repair shops today and wished I hadn't. First one was staffed by a child but hey, some kids know a lot. He didn't have a clue. He went to speak to the technician so said he had no idea but might be the CMOS battery.

Next store was a man who drew his breath in over his teeth and shook his head a lot and said it could be anything. I asked if it could be the processor. More head shaking and more "could be anything". Then he said it could be the graphics chip if I was getting a blank screen - but I kept telling him that it wasn't even powering up. Then he said I could book it in if I wanted, there was a standard charge to run a diagnostic and see what error codes it was throwing up - but it's not even powering up.

I didn't give it to either of them because if they couldn't sound like they new what they were talking about, I wasn't very reassured!

There is another place I could try on Monday.

Could it be the CMOS battery though?

 

[carlo_bigtunes]

"My niece has a Dell Latitude D630 laptop. It recently died a death - all we were getting was the power light coming on for a second or two"

there's a dead mosfet P/N channel , i cann't tell which one coz every board different manufactur. usually with 8 pin soip ic mosfet near power plug in.
it's dead to cut of power from overvoltage, before reach CPU or anything worst

 

[Alison556]

there's a dead mosfet P/N channel , i cann't tell which one coz every board different manufactur. usually with 8 pin soip ic mosfet near power plug in.
it's dead to cut of power from overvoltage, before reach CPU or anything worst

I'm sorry, you've lost me. Would this problem have continued even after replacing the motherboard?

 

[carlo_bigtunes]

after replace another MB it wil be normal again...

 

[harry_r_s]

Thank you. I went into two local repair shops today and wished I hadn't. First one was staffed by a child but hey, some kids know a lot. He didn't have a clue. He went to speak to the technician so said he had no idea but might be the CMOS battery.

Next store was a man who drew his breath in over his teeth and shook his head a lot and said it could be anything. I asked if it could be the processor. More head shaking and more "could be anything". Then he said it could be the graphics chip if I was getting a blank screen - but I kept telling him that it wasn't even powering up. Then he said I could book it in if I wanted, there was a standard charge to run a diagnostic and see what error codes it was throwing up - but it's not even powering up.

I didn't give it to either of them because if they couldn't sound like they new what they were talking about, I wasn't very reassured!

There is another place I could try on Monday.

Could it be the CMOS battery though?

HaHa Nyc..
CMOS battery doesn't stops the computer from even getting on. Atleast you will see the bios screen anyway!
In that case you just have to manually set the settings before getting to OS.
.
Try the other shop you mentioned on monday!
Since you have changed the mobo, the problem narrows to wiring or CPU or GPU or something shot is circuiting!

 

[Alison556]

Is GPU the graphics chip? That's onboard so was replaced along with the motherboard. I've ordered another processor for it - it wasn't expensive and was worth trying before I brave the other computer shop. I nearly lost the will to live with the first two!!

 

[harry_r_s]

Is GPU the graphics chip? That's onboard so was replaced along with the motherboard. I've ordered another processor for it - it wasn't expensive and was worth trying before I brave the other computer shop. I nearly lost the will to live with the first two!!

LoL. Why are you wasting money and performing hit & try methods? Find some good shops to atleast figure out the problem.
& Just remember that the minimum requirements for entering the bios are power, cpu, ram.