hi, i was recently given a sorry looking but working T5600, its no longer a biohazard and i have memory a 2.5gb NIC and a new GPU ready for it.

Although the system boots to win 10 fine, I cannot for the life of me get into the BIOS (A19), I have tried hitting F12,  selecting BIOS setup to no avail, i tried going in by F2 and it just goes to a black screen.

diagnostics reports all well

I've changed the CR2032 battery, pulled the boot drive - this at least got me a no boot device but again black screen when entering BIOS. 

I've searched the internoodle but nothing suggested works.

any ideas?

Fatty