Latitude dead

Hi
My girlfriend has a Dell Latitude D505 but the power supply was lost.
I got a brand new one from eBay & all was fine, except that after about 15 minutes, the laptop suddenly went completely dead. Now pressing the power on button does nothing at all. The battery appears to be charging though as the light flashes.
It's an old machine & might cost quite a lot for a shop to diagnose the fault, so can anyone give me a few pointers? Is there an internal fuse? Any ideas on how to fix cheaply? It seems internal to me, but could it be a virus? What generally goes wrong with these?
Many thanks in advance.
Paul

 

Was the ac adapter you purchased a Dell adapter that was designed for that laptop or an off brand? Did you verify compatibility prior to use?

Is the battery charged? Normally the batter will have a charge indicator on it so you can press a button and it will show you if it has a charge.

If the battery any charge and you cannot get any indication that the system is powering up then your motherboard is probably dead. If this is the case, then I'd recommend getting a new laptop. If you had another AC adapter, you could also try using it to see if your system powers up. But if you have no indication that the system is turning on when you press the power button, it is either 1. the battery, 2. the AC adapter or 3. the motherboard.

 

Try removing the battery and AC and hold power button for 30 sec. If that doesnt work, find a way to remove C MOS battery and try again. This is power resetting and you will be surprised how many people got their machine working with this method.

If that doesnt work, I would agree with Ghost. Compare amps and all the details with the OEM ac. Like ghost said, verify whether it was compatible. Non OEM kills more mobo than people actually think. Its quite of a risk people take to save 50%. I have been to factories in china that produce these aftermarket, non OEM products. Its like witnessing any meat packing factories from the book The Jungle by Upton Sinclair. The components are the cheapest and utmost unreliable.

and if mobo is fried, get a new laptop. The fix cost doesnt worth it.

 

Good point. Definitely try this before ruling the mobo dead. The manual might help you here.
Documentation

Addition: Latitude D series laptops are pretty easy to take apart. You should be able to find the CMOS battery under the keyboard or palm rest.

 

Sounds like a ram problem