Laptop will not start, probable MoBo or CPU failure..
Posted on 2004-09-07
my laptop just died on me the other day and after popping it open and messing around a bit I sort of came to the conclusion that it is either the CPU or something on the motherboard (an onboard device or the motherboard itself). This laptop was bought in May 2002, and from a supplier (that sold the same computer 2 years ago) I was told that I had to find a standard Intel P4 1.6 - 2.4gHz CPU (for desktops, it was one of the desktop replacement computers with normal CPUs) - which is a bit of a problem unless I go for the eBay solution or find a second hand shop somewhere. Anyway, I just want to bounce a few ideas with you guys in case I have overlooked something. How can I be sure it really IS the CPU? Or the motherboard? I dont want to go out and purchase a $150 CPU that I might not even need,and I am having trouble finding anyone I know that has one of these in their computers so I can try it first. When I turn it on I can detect SOME sort of life, because the ON light comes on and the fans react but moves only slightly before they stop. I have tested the memory chips (2x256MB in there, tried both on their own in both sockets - nothing. Unless they BOTH blew at the same time, but that's unlikely), and the harddrive is still ok. I tried to take the processor out and start it again, and it still acted the same way (not sure if that means that it's screwed and that the motherboard reacts this way with a defect CPU, or if the CPU is fine and there is something else and that it at this time doesnt matter whether or not the CPU is in there..). No beeps, no nothing. Its just dead, except the green ON light, that will be turned off again if I turn the computer off again.
My laptop is able to play music CDs without the computer actually being turned on, and has Play, Stop and the other buttons needed for this on the front panel. I have tried to put a CD in and it played it without any problem. The sound obviously comes from the soundcard and out the mini jack output, so I know for sure that it still works, and I assume that the motherboard has SOMETHING to do with this feature and it gives me hope that it still works. I also assume that the powersupply works since the ON light works and the thing is able to play CDs.
Am I right to think that it is likely to be the CPU? I can try to rip the network card out, but I am afraid it's built in on the motherboard.. I've tried to start it without the battery in (on external power), without the DVDROM, without the disk drive and without the harddrive - no changes.
Any good ideas! Anyone ever experienced this?