1) Boot up errors: It seems that [censored] near every thinkpad ever bought on EBAY comes without good batteries. In particular, if the CMOS (or backup battery for us non-techies) is dead, you will get error messages when the machine self-tests. Errors 161 and 163 seem to be sure signs of a dead battery. Experiences seem to vary, but without the CMOS battery the machine generally won't boot up.
Good advice on fixing this can be found here:
http://forum.thinkpads.com/viewtopic.php?t=21895
2) It appears to be a common problem that if you get a 600E (and possibly other models) with a HD without an OS, you may/will have trouble booting your OS disk from the CD. Since a lot of thinkpads sold on EBay come without a floppy drive, this problem seems to occur a fair bit. I've searched and found many posts over time here with a version of this problem.
First, make sure that the BIOS is set to boot from the CD. Press F1 while booting the computer and go into the Start Up section, and ensure that under Power On, that the CDROM is the first device listed for booting. This solved some people's problems.
I, however, tried booting legit versions of 95, 98se, ME, and even XP without success. At least 2 of those, I KNOW are bootable CDs, so that wasn't the problem. After ridiculous amounts of goofing around (removing RAM, booting with and without the battery, switching RAM around, standing on my head, etc) I was never able to get the machine to boot from CD.
If you are unlucky, like me, this will not solve your problem. I suspect (but cannot confirm) that the machine just wasn't recognizing that the CDROM drive was even there. I eventually had to resort to borrowing a floppy drive from a friend and booting with that drive and an old WINDOWS 98 startup disk that I miraculously found in my desk drawer (pack rat for the win!). From there, I was able to access the CDROM drive and run the SETUP file. Installation proceeded normally.
In conclusion, I would suggest that you buy a laptop with a floppy drive or an installed OS. Spare yourself the misery I have known
I hope this is helpful to someone down the road to repay the great help others gave me.




