Not sure if this is the right forum to post this on, if not just tell me and I'll move it to the correct one. I have an old (mostly stock) HP Vectra VL 6/333 Desktop that currently has a Pentium II MMX @ 333mhz and I want to upgrade it with a Celeron (Mendocino- Socket 370 with a Slot 2 adapter) at 333 mhz. Unfortunately when ever I try booting the PC with the Celeron it hangs up at the second boot stage out of 8 on the monitor and wont turn off without a "hard" shutdown. The adapter the Celeron is attached to has multiple jumpers on it I can change but I haven't really messed with them as they are supposedly already set to automatic config for any socket 370 processor. The motherboard has a set of switches that controls the cpu speed and is already set to 333 mhz and ranges from 200-366 mhz. Is there a way I might be able to rig it to work or is the motherboard just too old to accept and adapted processor? I'll post links and pictures if you need them. Thank you for the help. - Jason