HELP! significant graphics performance loss

[Link1478]

I just recently built a computer and its been running really well, but I am running into some trouble. I've been running furmark to check my gpu's stability while overclocking it and I followed all the steps I could find. I also didn't really increase the voltage for more than a minute, so I doubt I somehow hurt my card. The thing is yesterday it was running furmark benchmark 1080p with around 40-45 fps. I oc'd it and made sure its stable at that overclock and got around 48-50 fps in furmark. Then I check it today cuz I feel it being kinda slow and I can only get around 18 fps!!! what happened. I didn't keep it on oc except when gaming, and It still won't do any better in furmark whether its oc'd or not!
I didn't update any driver I don't think, and my driver is up to date so Idk what could of happened. Please try to help me sort out the issue.
Im running a asus GeForce gtx 760 direct cu ii oc
with fx 6300 @ 3.5GHz
8gb ram
asrock 960GM/U3S3 FX mobo
windows 8
any help would be greatly appreciated !!!

 

[MasterMace]

3 things to check:

1. Windows power savings settings
2. Graphics temps
3. What power supply do you have?

 

[Link1478]

3 things to check:

1. Windows power savings settings
2. Graphics temps
3. What power supply do you have?

1. High performance
2. get 38C normally. Just ran furmark for 10 minutes on 1080 burn in and it slowly rose to 52C and stayed there the majority of the time. didn't get above 17 fps or 50% fan speed on gpu
3. Corsair CX600M

 

[Link1478]

3 things to check:

1. Windows power savings settings
2. Graphics temps
3. What power supply do you have?

Ok, like I said before I was still having problems until like a few minutes ago.
I came back to my computer after it being idle for like 20 minutes and it wouldn't wake the screen but the tower was obviously still on. So I hit restart on my case, and lo and behold, the furmark tests now give me back up to my original 44 fps. then I switched it back to oc'd settings which I haven't used since it dropped framerate, and It got 48 fps easy. I didn't change any settings that I really know of, so idk. My computer just seemed to fix itself!
I'll come back to this thread if it re-screws up tho! THX