I am now running a full test on both Dimms.taking awhile so, I thought I would post my findings. I rebooted with 256 Dimm in the A slot, 512 in the B slot, DVD installed and applied pressure on the 256 Dimm upward and into the Dimm slot.

The Bios splash screen started! I booted into PC Doctor and tested the system board all passed. I rebooted with 256 Dimm in the A slot and DVD installed and applied pressure on the Dimm upward and into the Dimm slot. I got 1 3 3 1 beeps, all lights on keyboard and LCD lit, The power on light stayed lit, Fan spins, system did not boot, and LCD back light did not light. I rebooted with 256 Dimm in the B slot, DVD installed and applied pressure on the Dimm upward and into the Dimm slot. I rebooted with 256 Dimm in the B slot and DVD installed. I got 4 beeps, all lights on keyboard and LCD lit, The power on light stayed lit, Fan spins, system did not boot, and LCD back light did not light. I rebooted with the 256 Dimm in the A slot and DVD installed. I tested the 256 and 512 Dimms in my other T23 they worked and were recognized in XP. ( future reboots will exclude all above listed items unless stated otherwise) I got the 1 3 3 1 beeps.Ram or system board. I removed the modem card, ethernet daughter card, DVD Rom, Hard Drive, battery, and Ram. I rebooted and started getting beep codes.

I inspected Dimms a 256 Dimm was in the B slot (Dimm farthest from you when typing) and 512 in the A slot (Dimm slot closest to you when typing). I received the machine and it booted up fine 1st try. Smidgley stated that the motherboard need replacement because of random lockups/freezes (none of the keys work or cursor works, fan is still running) and reboots. Smidgley upgraded CPU and SXGA screen himself. I bought this 2647-8MU from Smidgley to harvest the 512 Dimm, 1.2 CPU, and SXGA screen.

Blue ram slots don't work