
Dead TX-Pro motherboard (Amptron 8500)
Whilst upgrading a hard drive 4.3GB I got into AMI winbios, the mouse arrow froze so I rebooted, now cannot boot at all, the monitor light just blinks, any suggestions? 

Amptron PM-8500 = PC Chips M560
Check all connections. Try to clear CMOS.
Check all connections. Try to clear CMOS.
Patched and tested BIOSes are at http://wims.rainbow-software.org
UniFlash - Flash anything anywhere
UniFlash - Flash anything anywhere
I have a CD-Rom on the same cable as the upgrade 4.3 GB HDD. I think that the CD-Rom is set as a master, could this be the problem? How do I flush the CMOS on this board as I cannot find any jumper and the battery is not accessible?
First disconnect everything including IDE and FDD cables and remove all cards. Keep only VGA and keyboard. If it's still dead, clear CMOS (see board manual for jumper location).
Patched and tested BIOSes are at http://wims.rainbow-software.org
UniFlash - Flash anything anywhere
UniFlash - Flash anything anywhere
I found the jumper, booted with jumper on then took jumper off and rebooted again. When rebooted same effect, nothing at all. I have a second Amptron PM-8500 with a non functioning battery, if I took the bios chip off that and placed it on the dead board would that be a solution? 

If the BIOS is bad, that will work.
Otherwise you can replace the battery on the working board and swap the boards.
Otherwise you can replace the battery on the working board and swap the boards.
Patched and tested BIOSes are at http://wims.rainbow-software.org
UniFlash - Flash anything anywhere
UniFlash - Flash anything anywhere
Many thanks for your help, it has been highly appreciated.