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T400 Stuck at post screen
Posted: Sat Jul 14, 2012 3:40 pm
by Ameharhughes
My ThinkPad T400 is failing to get past the POST screen, there are no errors no any beeps. If left it for 2 days and it didnt go past.
See picture --->
http://imagebin.org/index.php?mode=image&id=220796
I have tried, with and without the power supply and a different one, I have tried with and without the keyboard and Palm rest, I have reset the CMOS and I have tried both stick of RAM in each Module slot, individually and together. I have tried with and without the hard drives.
Im at a complete loss as to what I can do, I miss my laptop
any help im really appreciated
Re: T400 Stuck at post screen
Posted: Sat Jul 14, 2012 3:55 pm
by rkawakami
I think you were almost there... try removing all of the MiniPCI Express (wireless) cards and see if the system gets past the splash screen. If so, then replace one at a time and when (if) the hang occurs again, then the last card you re-installed is probably defective. If you also have a modem daughter card, remove that as well.
Re: T400 Stuck at post screen
Posted: Sun Jul 15, 2012 12:46 pm
by Ameharhughes
OMG why didnt I think of that......
Thanks a lot
Gonna do this now and pray.....
Re: T400 Stuck at post screen
Posted: Sun Jul 15, 2012 10:16 pm
by richk
On that model, it usually means a USB port is damaged (normally, one of the two on the left). They had problems with them and will fix it if you have warranty remaining. Otherwise, you can try straightening the pins with a needle, or at least get them not to short to each other or two the side of the port. Otherwise, you need to replace the board.
Re: T400 Stuck at post screen
Posted: Thu Feb 21, 2013 9:43 pm
by PJs
Thanks a lot richk! You've just saved my T400:))
Re: T400 Stuck at post screen
Posted: Fri Feb 22, 2013 12:55 pm
by EasyMac308
What I do with the broken USB ports (assuming non-warranty) is I straighten the pins and make sure it will boot. Then, I fill the damaged port with hot glue and call it good.
If I already had the mobo out of the case I'd probably desolder the port and either replace it, or leave it unpopulated. I haven't felt the need to bother though.
Re: T400 Stuck at post screen
Posted: Wed Sep 25, 2013 10:53 am
by DJL329
Thank you all for the information regarding the USB ports. I was having the same problem: the system would hang at the Lenovo splash screen during POST, but I didn't know the cause. After reading this thread, I realized it was the 2 busted up USB ports. By bending the USB pins away from each other, I was able to get my T400 to boot again.
