As the title says, I tried to upgrade my mid 2010 5.1 CPUs last night with these delidded 3.06 GHz X5675 processors here: https://www.ebay.com/itm/Delidded-P...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 I thought I swapped out the CPU's properly with thermal paste application and heat sink placement/tightening but after I slid the CPU tray back in I was getting a steady red LED light from CPU A on the dual processor board. The fans on the computer are blasting including those on my shoddy graphics card (which I am replacing as well). I'm also not getting any type of video. I consulted the technicians guide and decided to switch the CPUs and now I am getting a steady LED light from CPU B and CPU A gives a quick red flash after hitting the power button. But again, after it powers on I'm greeted by blasting fans and no video. When I power down the computer on the LED diag it is showing me "OVTMP CPUB." I've tried to do some adjusting on the heat sink but nothing seems to be working and I am still getting the red light from CPU B on the dual processor board. Again these are delidded CPUs so I've attempted every different level of tightness/looseness with the heatsinks and still nothing seems to be working. What could I be doing wrong? Or are one of the CPUs I got just a dud considering when I switched them, the "OVTMP" diag followed it.