Can't seem to fix my issue

DoctorlyRob

Commendable
May 5, 2016
2
0
1,510
First post! So my computer will not boot. When I turn it on it will just begin to boot (nothing shown on monitor) then shut off and try to boot again cycle never ends. The LED POST gets to 45 (which is "begin to end CPU SAM init/relocate bases" according to product Guide pdf) The board status LED signal hot cpu before it shuts off. I just bought a Hyper 212 plus cooler it obviously shouldn't be getting hot. Could someone help? Thanks!

Edit: The whole computer has worked for years. I used to have an old Evo cooler on it and something happened to it and it stopped working. I put the stock Intel cooler back on and I'm aware that it would run a bit warm but I didn't mind b/c I have a massive case with insane airflow so thought it would be okay for a bit. When it originally started I shut it off checked everything turned it back on and it worked for that day next day same issue and over just about a week it came to the point where it will no longer boot up no matter how many times I turn it off and on again. Everything is plugged in and plugged in correctly I've already went through all that before I decided I needed help. I believe I've answered everything here again thanks for the help!

PC Specs:
Motherboard - Intel BOXDZ68BC http://www.newegg.com/Product/Product.aspx?Item=N82E16813121533

Cpu - i7-2600 Sandy Bridge http://www.newegg.com/Product/Product.aspx?Item=N82E16819115071

Gpu - EVGA 780

Psu - Thermaltake Toughpower XT 1375W http://www.newegg.com/Product/Product.aspx?Item=N82E16817153155

RAM - G.Skill Ripjaw Series 1600 DDR3 http://www.newegg.com/Product/Product.aspx?Item=N82E16820231314
 
Solution
Are toy certain that the cooler is fitted properly, with proper paste application and firmly locked, level to the motherboard?

Is the CPU fan connected to the correct motherboard header?

DoctorlyRob

Commendable
May 5, 2016
2
0
1,510
Sorry was typing on a phone should have added more, rest of PC Specs will be on here later as for when it started. I have had this cooler before and I'm sure it is installed correctly thanks for being thorough