generic computer with pc chip motherboard fail to boot

hello Expert,

I have a generic computer motherboard pc chip m833g ver 1.5a.

I borrowed a friend hard drive (windows 98 loaded) to do some testing--- I remove my hard

drive and connect his own.

the computer failed to boot, i subsquently remove the borrowed hard drive

and reconnected my orginal hard drive.

I recieved shock when  the blue screen of death  appeared and the computer just went blank

I decided to extract the cmos battery wait a few seconds and reinsert hoping the

system will revert to factory  default and then reconfigure all onboard and pic  hardware found.

This fail and now i am saddle with a non functioning system.

Would anyone please advise what should i do next to make my system functional again.