08-12-2012 11:25 AM
I purchaced a used Thinkpad T500 off ebay about a month ago it worked fine for the first month no problems at all then one day it suddanly shut its self off and wouldn't come back on no lights at all. The lights came back on after removing the battery and unplugging but went off again as soon as I tried to turn it back on. I removed the hard drive and it came back on again so i took the hard drive out of another laptop and put it in and it loaded ubuntu from it. which ran for about 10 minutes and shutdown again this time the lights remained on but attempting to turn it on failed until the hdd was removed. with no hdd in the computer at all it runs pc doctor from cd for quite some time but then eventually went off same with running ubuntu from usb.
When left alone for some time the laptop will eventually come on again and run normally for a short time then the same pattern repeats its self. With no hdd in at all it will run the pc doctor load test for quite some time without shuting down. The tempertures are fine all around mid 30s 45 was the highest recorded in the short periods it was fully working.
I have read alot about these problems but none are the same as mine only thing I can think on now that might be causing the error is a voltage problem on the motherboard so I thought I would post here to see if anyone knows of a solution that doesn't require replacing the motherboard.
T500 Type 2243-4DG
CPU intel P8400 2.26ghz
Battery practically dead attached when it first happened not attached during testing
Default HDD hitachi 160GB 5400RPM
Test HDD Seagate 500GB 720RPM
08-12-2012 12:10 PM
Well its likely a hardware problem.
You can do and F8 boot and I believe memory diagnostics is on that page in Windows 7 or from a boot CD.
- hardware test memory
- Identify the HD manufacture and model number and go the respective site and run their HD diagnostics on the drive. Could be a bad HD and that would be my best guess.
- you can blow out the cooling channel with an aerosol can of compress air. Do it from the air intake which is in reverse. Dust will accumulate in there.
In Windows 7 you can check the critical even logs.
08-12-2012 01:05 PM
The first time i tried a memory test it shutdown in the same way near the end i tried each module one at a time and they both made it to the end i meant to try it with only one module running normal but forgot i will try that now as i was typing it went off so ignore that.
The airways are clean and i reapplied the termal paste didn't change anything I thought it was the problem because how the laptop shuts off is exactly the same as a thermal shutdown test in pc doctor.
I swaped the hdd with another thinkpad and ran a bios disk test on both. both made it to the end but shortly after the t500 went off while the other with the t500's hdd went on hdd seems to affect the problem but not the cause of it.
only critical errors are invalid shutdown ones no helpful details there was an error that happened a few times on the morning that hadn't happened before
"The description for Event ID 15 from source TPM cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer."
and since there has been a few of this warning
"The embedded controller (EC) returned data when none was requested. The BIOS might be trying to access the EC without synchronizing with the operating system. This data will be ignored. No further action is necessary; however, you should check with your computer manufacturer for an upgraded BIOS."
don't think that could cause this sort of problem though
08-12-2012 01:35 PM
08-12-2012 02:03 PM
I have tried it on another charger but its 65w i was going to get a 90w one from work tomorrow to test it as 65w isn't enough for a t500 the event logs show that it is throtling the cpu on the 65w charger. The battery is pretty much dead holds maybe 5 minutes.
the other hdd came out of my x60 tablet it is a replacement drive though not the one that came with it all the tests i have ran passed including hdd tests says the controller is fine sometimes it dies in the middle of the tests though. I have also run it on a usb drive containing ubuntu with no hdd plugged in and it happens as well but takes much longer than if the hdd is plugged in which is why i am thinking power/voltage issue because the hdd draws quite a bit of power seems a bit wierd that the 7200rpm one last longer than the 5400rpm one i would assume the 7200 would draw more power so there might be an issue with the hdd as well but i am sure its not the problem i thought i was getting off easy at first when it seemed like the hdd.
tempertures are low and no spikes that i can see before it dies it just dies 45c is the max i have recorded average around high 30s hdd is 28-31c.
08-12-2012 02:23 PM
08-13-2012 08:31 AM
same thing with a different 90w charger last thing to check is the dc connector quickly ruling out everything but the motherboard which will cost more to replace than the laptop cost.