I replaced an older mobo with a Chaintech 7NJL6 Socket A Motherboard and installed an AMD Athlon XP3000+ Socket A CPU Barton Core 333FSB along with 512MB pc3200 DDR 400 MHz memory. I have Windows XP installed on an existing hard drive. After unsuccesful attempts to boot from the hard drive, I reset CMOS and upon bootup I get the following: Memory Frequency 200MHz IDE Channel 0 Master : ST300021A 3.19 IDE Channel 0 Slave : None IDE Channel 1 Master : None IDE Channel 1 Slave : ATAPI CD-RW nothing on IDE channel 2 or 3 CPU has changed, Please reinstalling CPU information in CMOS setup F1 to continue Then it shows Pool Data ... Then I can choose to start Windows in Safe Mode, Last Known Good, or Normal. The machine then reboots regardless of what I choose and goes back to screen 1 with a Post Code 7F. Can anyone help point the direction on this one? Thanks Jay

You cannot in most instances just move an XP installation to a new motherboard and expect it to boot. XP is very hardware specific. Boot up with your XP CD and do a repair instal. You may be able to save your files and settings that way. You will have to activate it again and will also need to do all your updates again. I used to have a signature but it disappeared and I just couldn't be bothered writing another so please feel free to ingore this.

I would also have to ask you whether you bothered to read the message on the forum that comes up after you hit "Submit" and before you hit "Confirm" The one that says your question has probably been answered before and you should do a search . This question has been asked and answered hundreds of times since XP was first released (unleashed) on unsuspecting users. I used to have a signature but it disappeared and I just couldn't be bothered writing another so please feel free to ingore this.

In a nutshell, XP is looking for these differences on boot. Just a FYI for ya, Display Adapter, SCSI Adapter, IDE Adapter, Network Adapter MAC Address, RAM Amount Range (i.e. 0-64mb, 64-128mb, etc), Processor Type, Processor Serial Number, Hard Drive Device, Hard Drive Volume Serial Number, CD-ROM/CD-RW/DVD-ROM. All these changes will all cause XP to go nuts. Skip

Your BIOS settings have changed, go into BIOS INSTEAD of hitting F1, as it quite clearly the settings are not OK.