I've only found one reference to my problem and that was on this site in the wrong forum. I haven't found any answers, though. My IBM 600 laptop has decided it doesn't want to boot anymore. Instead I get an error 127 message after it tests the memory and reports the 228800KB's OK. In testing the components from the dialog box that opens I get an "DEV 001", "ERR 42", "FRU 1110" message when testing the systemboard and testing the memory causes the machine to freeze up. Everything else tests OK. The situation is the same regardless of whether I use the onboard battery or the AC adapter. It's the same regardless of whether I use the HD or my emergency boot floppy. I've replaced the CMOS battery and reset the date and time. The machine is identified as type 2645-45U, serial number 78-KNR91 05/99 The platform once booted is Win98SE. The bios is IBET39WW and the CPU is a Pentium II at 300mHz The motherboard is model number FC/01/00 I'm going to keep poking at the problem but I'd sure appreciate it if someone could give me a leg up on what to look for. Thanks in advance.