Black screen all I hear is chime

Iv tried all the keyboard combinations to reset pram and using a cord to project screen onto a different max an all the basic troubleshooting I could not get it to work. So I took off my screen and removed hard drive and plugged it into a different Mac. It works fine. So what else could it be ?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0

crwdns2889612:0crwdne2889612:0 0

crwdns2944067:07crwdne2944067:0:

R schneider what are your diagnostic LED's showing you? How to find and read the Diagnostic LEDs

crwdns2934271:0Mud 15, 2022crwdnd2934271:0 oldturkey03 crwdne2934271:0

#2-4 are all on with the computer powered up. Led one is off @oldturkey03

crwdns2934271:0Mud 15, 2022crwdnd2934271:0 R Schneider crwdne2934271:0

#3 is also on

crwdns2934271:0Mud 15, 2022crwdnd2934271:0 R Schneider crwdne2934271:0

@R Schneider #1 is off? Odd.....