Alright, I've posted this question before, but now I have more to add. I just woke up so forgive me for any errors I make. My system is as follows: i5 3570k at 3.4 ghz Asrock Z77 Extreme4 Mobo Crucial Sport Ballistix 8GB ram (2x4) Noctua NH-D14 CPU cooler (brand new, replaced a stock CPU cooler) Seagate Barracuda 500GB HDD Samsung 840 Pro 256GB SSD EVGA GTX 780 Classified Edition with 3GB of VRAM (brand new, replaced a EVGA GTX 670 FTW 2GB) Corsair AX860 Platinum PSU (brand new, replaced a Corsair TX650 PSU Bronze) Cooler Master Haf 932 Full Tower (brand new, replaced a generic cheap mid tower) Running on Windows 7 OS OKay, these problems started around the time the Tianfall beta was open, I think the 17th of February. All of my old parts were still in the PC and I did not replace them until last week. I did not remember downloading anything that day, although I did receive some malware or adware around that time (SavingsBull), which is only present on Mozilla Firefox now for some reason, which I uninstalled. I also downloaded BitDefender somewhere around that date, which I have already uninstalled to see if it was the problem, it is not. I don't think it is hardware, several stress tests were ran on about every component and they were fine. However, the voltages I'm not sure about, using SpeenFan, my voltage drops from like 12 something all the way down to 11.83 volts while playing a game, is this normal? I get random FPS dips and when it drops it lags too much, consistent 60 FPS all the way down to 30-40(which should still be playable). The new GTX 780 should perform way better than my previous card, it doesn't. My computer isn't performing as well as it used to, sometimes programs won't do anything when I click them, random crashes when in game, etc. In Tomb Raider, all settings maxed out, I maintain 60 FPS, then when there are no enemies around, it'll drop suddenly then pick back up. Benchmarks easily put the card in the 80s MINIMUM at 1080P, I do have V-sync turned on at the NVidia Control Panel. My Gtx 670 ran games just fine, might have to lower a few settings but it maintained a constant 50-60 FPS most of the time, and didn't lag, stutter, etc. Then one day it went to crap. At first I though it was the PSU or GPU, now that I've replaced those it's got to be something else. ALL of the drivers are up to date that I know of, including the Mobo, if you would like to know which updates are currently installed let me know how to tell you. I've done a clean installation of the latest Nvidia driver as well. I did take it to computer shop where they ran stress tests and scanners for TWO days, and they didn't find anything. They recommended that I buy a new HDD and reinstall just my OS on it to see if it's a software issue. Everything is staying cool so I'm really frustrated. I realize no GPU could stay locked at 60 FPS all the time, but for the most part this one should, and it shouldn't lag under 60. I'm thinking I just want to format everything and start over, I bought the PC used from a friend so I've only had time to basically install games, nothing important. Last night I almost threw the thing away, I got a blue screen on a restart and it kept popping up, wouldn't let me boot up, finally remembered how to boot into safe mode and I restarted to a previous successful boot. Please help if you can guys, I love the PC and I plan to play at 1440P and overclock stuff soon, not until I get this fixed though. Thank you for your time.