Hello I have a 2009 mac pro that was flashed and upgraded to 2010. Its been running great till this morning. Just tried to turn it on and, power light comes on, disks spin up, fans spin up but nothing else happens. It was powered off somehow over night. There is also a red light glowing inside right under the first HDD trey. I took a picture of it, hopefully u can make it out. Any ideas what the light is? or possible issue? it was working fine as of last night. Never had an issue in 4 years i had it. EDIT: it seems that light under HDD 1 sled is on after i power it off but when its on there is a different light next to the cpu that is red. picture attached.