Severe Computer Malfunctioning?

[dante]

First off, the specs of the things I've listed it down to these 3 things for as to what could be causing my problem, which will be explained below (This is on a desktop, btw):
- AMD FX-8150 Zambezi 3.6GHz Socket AM3+ 125W Eight-Core Desktop Processor FD8150FRGUBOX
- ASUS M5A99FX PRO R2.0 AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard with UEFI BIOS
- HIS H675F1GD Radeon HD 6750 1GB 128-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity

Basically, I'll list the type of errors that would occur, in the order they'd occur.
1. constant freezing issues ever since first built (occured MUCH less when increasing speed of the cooling fan)
2. computer would revert to crappy graphics irreversably and go through so many glitches out of nowhere (this would literally happen within a matter of minutes with no farwarning) and I would be forced to DBAN my harddrive and restart everything from scratch. This has occured 5 times, but I know it's not my harddrive because I've tried with 2 completely different harddrives and same problems occur.
3. computer wouldn't install updates; CONSTANTLY froze even when just checking for updates.
4. display won't work AT ALL. My monitor won't even detect anything is there. (other devices still are detected flawlessly).

My opinions to this problem:
1. The CPU suffered too much heat damage (which honestly, wouldn't surprise me)
2. Motherboard has suffered some sort of damage.
3. Broken graphics card (no idea how it'd break, though. I never pushed it's limits. fan still works fine.)

It wouldn't be my power supply. I've never had power problems with it before. I'm confused at to what is going on here, and I don't want to take it some store where some douche is going to charge me $100 JUST to say, "the _______ is causing the problem," and then not even fix it without first slapping on another $200-$300 fee.
Any opinions as to what could be causing this problem? I hope to hear from some of you guys soon it would be greatly appreciated!!
@Torgo- no, it's real, not hacked. Also, there isn't really much of a way I can check the hard drive if I can't see anything the computer is displaying...
Also @Torgo - I can bear with a lack of updates if that can't be fixed. The problem here is that the computer (in some way, shape or form) is BROKEN. That's the major problem here.
You know what...to make this easier, here's just my full setup:
AMD FX-8150 Zambezi 3.6GHz Socket AM3+ 125W Eight-Core Desktop Processor FD8150FRGUBOX
ASUS M5A99FX PRO R2.0 AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard with UEFI BIOS
HIS H675F1GD Radeon HD 6750 1GB 128-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity
Western Digital Caviar Blue WD5000AAKX 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive - OEM
COUGAR A-Series A560 (CGR B3-560) 560W ATX12V SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Ultra Quiet Power Supply
CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ8GX3M2A1600C9R
Rosewill RNX-G300EX Wireless Card IEEE 802.11b/g PCI Up to 54Mbps Data Rates 64/128bit WEP WPA WPA2 802.1x, 802.11i, AES, TKIP with 100cm cable external 2 dBi Antenna

[Torgo]

Nice machine. Is your OS real or hacked? I'm not sure I know any gamers who paid for their Windows operating system so I have to ask. The fact that it won't update is a major problem and it should be fixed before you do anything else. Also, did you check the S.M.A.R.T. data for the hard drives?

[Laurence I]

that motherboard Does support that CPU(some dont) but only if
the bios is 0311 or better(please check bios version).
But it is a 125 watt cpu and you could
have chosen a 95 watt cpu. Bearing in mind its the Amps that
are of real interest, and all of those amps have to be supplied to the Mobo.

Your power supply make/model is of ultra importance..you didnt quote it.

the min req for video card is 450 watt supply. this doesnt actually tell you
the Amps the card needs, but it hasnt got as much as it could have cos
you have to give lots to the CPU.

Sapphiretech list the 6750 as max of 86watts, and it has one 75 watt pci-e connector
we cant tell how much it gets from the slot and how much from the cable.
Hopefully your supply does have a PCI-e power cable, and you are not using a molex
converter for the extra cable.

it would be nice if your ram were on the asus QVL see the link for qualified vendor list
it would be good if you werent overclocking it
it would be good if your bios were up to date in case of hard drive issues most mobos
have updates for specific hard drive models and hard drives have manufacturer firmware
updates too(have you checked?)
it would be good to check the hard drive cable/change it. make sure Snap on ones are used
as they are better quality
it would be a good idea to soak test the system, NO internet, NO AV running
maybe there is a good Asus utility to do that for you.
it would be good if the video card ONLY USED THE DRIVERS FROM THE VIDEO
CARD MAKERS SITE.
it would be good to remove any external usb devices especially keyboards/mice/printers
as they might be sucking the life out of the usb sockets. Or at least connecting LOW
performance ones, NOT flashy gizzmo ones.

TURN OFF ANY POWER SAVING FEATURES ie power scheme always ON
as a lot of software STILL doesnt support hibernation properly.

some lcd displays are Known to be poor or unreliable with respect to PnP
detection. you didnt say what monitor you were using.
======================================
my best guesses.

1 its easy to misconnect the front header connections on the mobo CHECK and CONFIRM
...all PIN connections. If the case has a preformed cable then SUSPECT IT.
...Header connections are usually Unique to mobo maker.
2 front usb cable connections, same as (1) disconnect for now
3 its always worth checking your CMOS battery, anything lower than 3.0 v suggests
...the battery is on its slippery slope. A corrupted cmos often gives vague problems
4 your power supply just may not be up to the job. Parts get extra HOT when trying like
...mad to get their Power. The harder they suck the more difficulty the supply has and the less
...likely it is to be able to supply the Amps.
5 usually when a cpu overheats everything freezes INSTANTLY. All processing, All display
...updates cease completely. This is different to a program freezing as the screen or
...cursor can be seen to do other things.
6 typically if a graphics card has issues, lines appear or squares or blocks of colour
...since you didnt mention that i doubt if its the graphics directly.

there is known malware that deliberately heats up the cpu. recently i cleaned a pc of
all facebook stuff including unloading facebook apps, and it cured it of a seemingly
overheating problem. if you are a facebook freak, then clean install the system
and never connect the internet before doing a soak test.
it should be possible in the bios to activate upper and lower temp limits for cpu operation
i suggest you check and set them, or investigate the asus utilities as im
sure they will have some for cpu temp monitoring