When the laptop boots, it's to 'Network boot' - which fails when it cannot initialise the NIC controller.
I can sometimes get into the BIOS - nothing I change there changes the outcome.
The hard disk is not recognised.
The 4GB of RAM is reported as 2GB.
I can boot into a DOS USB boot stick. I can then flash the BIOS. No change.
I have swapped the HDD - no change.
I have swapped the RAM - no change.
Anyone have any other tricks?