486 Computer

Hi there

is it possilble to help me with my 486 acer computer because my PSU allows my HDD to run ,but not my CDROM, is it a problem with my PSU or my motherboard

is there not an updated bios for the following :

OS : Windows 95
bios :Acer/Ibm V2.0


I will send you the rest later

Regards

Roger