I know the original post is over 2 years old but I had the same problem. Here's what happened:
8 months after buying my Toshiba A135 the battery began charging only intermittently. It also would not run without the battery. I put up with it for a month then took it back to Best Buy to get it repaired under warranty. They kept it over 2 weeks then gave it back saying it was the battery, which they replaced. One week later I had the same problem again. Back to Best Buy. The guy at the counter said it was probably the battery, they had encountered a lot of that. I said no, explained it, and gave it over to be fixed. 2 weeks later I got it back. They had reset the BIOS, no hardware replacement. I got it home and it was not fixed. I took it back the next day. They kept it 2 more weeks. They replaced the motherboard. I took it home and...you guessed it the same problem on the day I got it home!!! I took it back with one week left on my warranty. I don't remember what they replaced the last time but I think it was the motherboard again. I got it home (2 weeks later) and THE SAME PROBLEM on the day I got it home. So, the lesson there is that Best Buy computer maintenance SUCKS!!
I called Toshiba to try to get them to fix it for free, and out of warranty. After several frustrating minutes of conversation with an accented person who just kept telling me that my warranty was up, I hung up and called back and got an English speaking person. SHE was very helpful, listened to my problem, agreed to give me a one-time fix ticket. They paid for the postage. When I got my computer back it was mostly fixed.
The problem was the module at the back of the computer where the power cord plugs in. It was defective. They replaced it and it worked fine after that, except that when it goes into sleep mode it will not wake up. I fixed that by turning off all the sleep mode options. BTW, a friend of mine with the same computer is now having the same problem.
May be your power adptor or battery or power cable out of oder. try with diffrent laptop. here are more laptop troubleshooting tips for repairing a laptop.
Notebook repairs blogspot have many laptop troubleshooting and repairing tips
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Wow... looks like a real epidemic. I've replaced 3 batteries, new powerpack, and now it won't power up although the front blue light shows the plug is in - and hot. I've pulled my whole entire laptop to absolute pieces because I've heard something rattling inside. (I had a Dell one time which had a screw rolling around which got caught up in a nasty place - I wanted to double check that wasn't happening again.)
Anyway, I was interested in looking in the spot where the plug inserts into the laptop and it appears fine to me but I suppose it could be bad. I guess that's what I'll try next. What a pain! I'll never purchase a Toshiba again. Stick with Dell !!!!!!!
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