When I first put my Haswell build together it ran pretty well - 4.7 ghz on 1.25v. It ran fine for awhile but temps where on the high side so I tried to lower the overclock with different volts to find a middle ground. About a week ago my pc occasionally stopped sending images to my monitor on some of the failed overclock attempts. I loaded defaults in the bios and everything was good again. I gave it some time before the next Overclock attempt. I did a few more MILD overclocks (4770k on VI gene) and I eventually was stuck with no screen signal on every start up. (everything still fires up) I took out the cmos battery for 10min and still got nothing. I ran through the pc reseating, checking for shorts, ram failure trying cpu graphics instead of gpu etc.. and found that I can get the pc running if I leave the battery out for longer. The pc seems to be running fine right now (I'm on it). I shut it down and started it up and it seems to be ok. At the beginning I could run it with whatever bios settings (that where reasonable) I wanted, but over time, the slightest tweak in the bios causes the screen signal issue. Hopefully I can figure it out because i want to at least have a small 4.2 overclock instead of stock settings! I'm afraid to shut it down because i might get no signal open startup again. I've had the no screen issue sometimes even if I didn't overclock. Any little change in the bios seems to irritate it. I'm going to try and find a bios update for now. If any one could help out with some tips let me know!
*UPDATE: I believe I found my problem, but I'm not 100% sure
I've used the cpu lvl up feature to get some suggested volts for an overclock and I believe it underclocked my ram voltage.
*UPDATE 2
No image again. After taking out the CMOS battery for 30+ min it starts up (with no image) then shuts down in 5 sec. Then it starts up and stays on but with no image still. I'm going to leave the battery out over night...
*UPDATE: I believe I found my problem, but I'm not 100% sure
I've used the cpu lvl up feature to get some suggested volts for an overclock and I believe it underclocked my ram voltage.
*UPDATE 2
No image again. After taking out the CMOS battery for 30+ min it starts up (with no image) then shuts down in 5 sec. Then it starts up and stays on but with no image still. I'm going to leave the battery out over night...