05-28-2011 03:07 PM
I am considering purchasing a broken Thinkpad T400. After the Thinkpad logo screen, the computer goes to a black screen with a cursor in the top left. I realize that this scenario is vague, but what could potentially be causing such a problem?
05-28-2011 04:58 PM
05-28-2011 07:42 PM
The only thing I can think of that might be fixable without special equipment is a damaged usb port. If pins are shorted, they can be straightened
05-28-2011 08:20 PM - edited 05-28-2011 08:26 PM
Here's one completely out of left field. This can be a symptom of a Rescue and Recovery restore to a new completely blank hard drive - at least for some versons of OS and R&R.
I realize that this is extremely unlikely (unless the previous owner just did a restore) but your OP invites wild speculation.
 On further consideration, burn and boot up (or boot from USB flash drive) a Ubuntu Linux live CD, or Windows install DVD, or most anything else. That should give you an idea about the general health of the machine. If you can't get that far, something is very wrong. The Linux live CD will exercise most everything. There are some Linux tools like gParted or even the command-line fdisk that will give you some idea of the health of your hard drive and SATA controller.
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05-29-2011 02:38 AM
Thanks for the suggestions thus far. Can this scenario be indicative of motherboard failure (i.e. a problem beyond my ability to repair) ? I'm trying to determine whether the laptop is worth getting involved with.