about two weeks ago my pc shut down and went into a boot loop that I couldn't figure out. Tried ram and GPU. When I reset the cmos everything went back to normal but booted a lot slower. Today I came home from work turned my pc on and it went back into the loop. Tried everything multiple times. Unplugged my two hdds. Tried running with one or no ram. Removed gpu and tried to run. Results haven't changed with anything I try. All fans and case lights also turn on. Runs for about 20 seconds then loops. Any help appreciated.