D900F/NP9280 Freezing, Flashing, HELP!!!

Hi, I still use a Clevo D900F as my main laptop

Recently it has begun to freeze prompting a forced restart, it doesn't make any sense to me because it occurs when NOT under load. I can play games non stop, but if I do something as simple as use event viewer or browse files(not even opening them), it'll have an episode. The next odd thing... IT NEVER CRASHES WITH A SECOND MONITOR CONNECTED. Only when using a single monitor... I don't get why this is happening...

I thought it was GPU down clocking causing crashing but when I try to install windows, sometimes it freezes too causing the installation to hang BUT all it does is stop any I/O's, the ...'s keep animating but it never moves percentage wise.

I thought maybe there was a ground loop that the second monitor corrected but leaving my second LCD connected and in windows disabling the display it still crashes.

I thought maybe the CPU was bad, I swapped CPU's but still crashed

Swapped the Ram, no change

Tried a different HDD, no change

Tried the GPU in another laptop, no crash but I didn't test long

I only have the motherboard, and the GPU left to replace and I am just worried I still won't fix it

Going to try reinstalling windows again and seeing if it fixes the issue.

I never noticed it crash on battery but the battery obviously doesn't last long

All crashes so far
1. Was just on the desktop, suddenly froze with massive artificats(only special case)
2. Was just changing Skype Options and settings, suddenly, flashing red screen
3. Was just opening IBT and it froze, nothing else, just froze
4. Was just starting up
5. Was installing Riva Tuner Statistics server, all the sudden the text looked like russian, all crazy and stuff, then everything froze, screen went black, required hard restart
6. Opened the start menu, screen went solid white
7. Went to a strobing screen while viewing event log

All thermal paste is new
Memtest86 passes
Furmark works for half an hour
IBT succeeds 10 passes maximum
Prime95 Passes for half an hour
Vram is Good
Nothing from CHKdsk
Tried a known good HDD
Tried improving X58 northbridge cooling(suspected failure point)

Configuration
CPU: i7 920(Tested with Xeon W3520)
Mem: 3x2 GB of Spacer(tested with 3x2gb of ASint known good)
HDD: OS Intel 520 SSD, storage 2x Seagate ST9500420AS(Tested with Western Digital Scorpio Blue 160GB)
GPU: Nvidia GTX 285m
LCD: 1920x1200
WLAN: Intel 6150
Bluetooth: Has it
Camera: 3M Camera
Battery is good

sounds like a new MB to me I/o errors? Doesn't make sense to me at all

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D900F/NP9280 Freezing, Flashing, HELP!!!