Computer Randomly Restarting.

OK I am at my wits end here on what is wrong. My computer is restarting randomly on me for apparently no reason.

It started a few days ago. Several applications said I wasnt connected to the internet even though I was talking to people in teamspeak. Then it looked like it was all working again for a few seconds and it restarted on me. No blue screen, no warning, just restart. When it came back up, I got blue screen on startup. I immediately thought this was a virus and ran my normal virus/malware removal tools when windows came back up. (Rkill, TDSS Killer, Malwarebytes)

Everything seemed fine for a few hours until it restarted on me again a about 4 hours later. Now Im thinking its a corrupt install. I start to copy files over to my backup drive and start the process of reinstalling windows. All the while getting restarts about every 5-10 minutes.

I reformatted and was able to install all of my drivers and copy over all of my backups just fine. But about an hour later it restarted again. When it came back up, I was missing a hard drive. So I open up the case and notice I have a sata cable barely hanging in the mobo slot. So I plug it in, and everything goes well for 2 days.

This morning my computer restarted on me while I was playing bioshock. So the first thing I did was update my bios thinking that maybe it was something wrong there. I also ran memtest just in case. No errors. After updating the bios, my computer was working fine until about an hour ago. About 12 hours of usage and it restarted while I was playing warthunder.

I am now seriously lost on what to do here.

My hard ware is
MOBO - Asus Sabertooth 990fx
CPU - AMD 1190t
GPU - Radeon 6870
Memory - 16gb Gskill Ripjaws.
Hard Drives 1 Hitachi 150gb (OS) 1 Hitachi 250 GB (Programs) 1 Western Digital 500GB HDD (Games) and 2 Seagate 1tb drives (Movies and backups)

Its a fresh install, so all of the drivers are current and up to date. If anyone has any info for me, please share.

 

Disconnect all hard drives except your C:, pull all sticks of RAM but one and see if the reboots happen. It kind of sounds like the Power Supply if flaking out and the only time I've really had a problem with my power supplies is when I have had a whack of hard drives installed.

Other than that, you may want to clean your CPU and GPU fans and set the fan speeds on both to maximum speed and see if you can get it to reboot again. Asus software is called AI Suite If I remember correctly, and you can set CPU fan speed with it. Maybe not enough or too much thermal paste between the CPU and heat sink? Fan on CPU is on tight?

Also, if you're using one, some Solid State Drives require a patch after so many hours of operation or the operating system seems to lose track of them and forces a reboot/shutdown.

 

I believe I have located the problem. It was a power issue, but not the power supply. I pulled all of my hard drives one by one while loading a bootable windows CD. I have had some restarts while in bootable windows during this ordeal.

While pulling one of my drives, I smelled something. That burnt syrup smell of burning electronics. The power connecters were slowly cooking on one of my hard drives. I pulled the drive and checked the others and it has been working just fine for almost a week now. The drive pulled was the 150GB. Nothing major lost there. Although I had to reformat my Steam drive.

I don't think it was the PSU itself. Corsair PSUs are very reliable, also bad PSUs usually pop and just go out or fry your electronics. The temperature of my machine is pretty stable. CPU temp of 30-40 idle depending on my room temperature. (It is Texas after all.) And the GPU is idle at around 30c while going to 65-70ish under heavy load.

The only problem I have had on this new format is I had one instance of the PC shutting off and would not reboot, giving me a bios beep code of one long three short. Which has not repeated itself after the ram was reseated.