Help diagnosing my old laptop.

Asustek computer inc. / K54l
July 5, 2012 at 10:58:54
Specs: Windows 7, 2.1 GHz / 4000 MB
I recently started to try to fix my old laptop which is a HP G7035EA.

I got a working charger, charges the battery, i know as it charged the laptops dead battery.

The problem i'm having is the no graphics whether internal or external screens used problem except its more complicated.
I ditched the laptop a few years ago, the last time i used it, it worked fine. now it doesn't.

There are no beeps, only drive that works is the DVD drive, hard drive gets no power, screen doesn't get power, back light doesn't come on, RAM probably works, have 2 GB sticks, tried both separately, still no luck, tried another CPU, still didn't work, removed wireless card, still doesn't work.

I narrowed it down to some random chip on the motherboard being faulty, the voltage regulators being faulty, the BIOS chip being faulty or the GPU being faulty.

The specs of my laptop + the extras/spares.

Intel celeron 540M- PGA478
1GB RAM
Intel GMA x1300 or something like that.
120GB hard drive, tested with two caddys, works.

Extras/spares-
1GB RAM
Intel celeron 900- PPGA478

If you need any other specs, tell me.

RAM is DDR2
The spare CPU has a 800MHz FSB but the board supports 533MHz.

I am a hardware guy not a software guy but i try to help.


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#1
July 5, 2012 at 12:22:42
Here's how to fix it.

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#2
July 5, 2012 at 12:29:31
Any other suggestions LOL.

I am a hardware guy not a software guy but i try to help.


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#3
July 5, 2012 at 13:31:49
Have you powered it on with the battery removed and only the power adapter attached?

You've been helped by a 14 year old.


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Related Solutions

#4
July 5, 2012 at 13:38:40
yep, same thing.

I am a hardware guy not a software guy but i try to help.


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#5
July 5, 2012 at 15:16:47
Any cables loose on the inside?

You've been helped by a 14 year old.


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#6
July 5, 2012 at 15:21:24
Nop, missing keyboard but thats it, just an thought but could it be a faulty lid switch?

I am a hardware guy not a software guy but i try to help.


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#7
July 5, 2012 at 16:14:40
Do you mean for the screen? I wouldn't think so.

You've stumped me. Try this:
http://www.blueplanetgreenliving.co...

You've been helped by a 14 year old.


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#8
July 5, 2012 at 16:17:22
Thats two in a row.
Any more suggestions LOL?

I am a hardware guy not a software guy but i try to help.


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#9
July 5, 2012 at 17:16:24
Go and buy another used laptop. Sell the one you are trying to fix for scrap on eBay.

You've been helped by a 14 year old.


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#10
July 6, 2012 at 01:59:50
Or i could keep it as a writing surface, don't need to buy another laptop or my mum will start getting annoyed that i keep on getting computers all the time.

Should i try reballing the GPU?

I am a hardware guy not a software guy but i try to help.


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#11
July 6, 2012 at 06:55:50
Well, I guess you could remove it from the board and see...but I wouldn't reball it unless it looks bad.

To use it as a writing surface is a new idea, make a desk out of the tops of laptops.

My desk is a total horror with the amount of computers I have. Counting them now...I have 7 working computers and 1 that is broken.

You've been helped by a 14 year old.


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#12
July 6, 2012 at 08:20:37
Remove it, it it uses the BGA. and i hate the BGA.

I am a hardware guy not a software guy but i try to help.


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#13
July 6, 2012 at 09:15:57
Remove it, it it uses the BGA. and i hate the BGA.

What is the BGA?

You've been helped by a 14 year old.


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#14
July 6, 2012 at 09:22:40
Ball Grid Array, basically uses solder balls instead of pins, sockets, LGA.

I am a hardware guy not a software guy but i try to help.


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#15
July 6, 2012 at 11:39:21
Oh.. that explains things. Do you want to invest much more time into that laptop? I would probably just scrap it. Thing is, I'm a software guy, as you are a hardware guy, and I can't help you much more with this.

You've been helped by a 14 year old.


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#16
July 6, 2012 at 12:12:05
To RMT2- I'll keep trying things as the problem is somewhere on the motherboard, i'll probably end up frying the motherboard because of anger, of course without the valuables (CPU, RAM.etc) , i'll wait and see if any one else comes along with suggestions, anyway thanks anyway.

To any other people- It seems to detect that a desktop CPU is in there as when i put my P4 in the socket (uses the same socket as the celeron) it turned on then turned off a few secs later.

Chipset, GPU and CPU all generate heat as usual, seems to detect overheating (took the heatsink off and let it run).

I am a hardware guy not a software guy but i try to help.


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