BSOD Windows 7 - Out of normal options

[tankerhun]

Hello forum users!

I may be posting this in the wrong section, but even I don't know, what causes the problem.

So recently, my one month old computer started doing BSODs frequently.
Every driver (even the BIOS) is up to date, I even installed all Windows 7 updates.
Everything runs at stock speeds, no OC.
I use Microsoft Security Essentials, and MSI Afterburner (Stock settings).

My setup:

Windows 7 Ultimate SP1
HAF X
Asus P8Z77-V
i5 3750k + CM Hyper 212 EVO
MSI GTX660ti 2GB OC PE
Corsair Vengeance 2x4GB DRR3 1600 MHZ Kit
Samsung 128GB 840 PRO SSD
WD Green 1TB
Asus Xonar DG PCI 5.1
Corsair HX850 Power Supply

My first BSOD was while playing Serious Sam 3 (Original, on Steam), the shadows started tearing, and then the system hang up. One week passed, with no errors.

Now, I get BSOD randomly, even in Windows. (Like, just opening Audacity caused it one time.)

The mini dumps most recently tell me:
MEMORY_MANAGEMENT 0x0000001a
Cause: ntoskrnl.exe

For just some added extra, very rarely (3 times now), green horizontal lines appeared on the screen, as seen here:
http://i.imgur.com/9dBaDa6.jpg

Interestingly, my video card shows normal temperatures and usage, even while playing games, most recently Dark Souls (Original, on Steam), and I can still get a BSOD.

Since these errors started, Mozilla Firefox is crashing randomly. I guess its related to the problem.

I tried everything I can in my limited knowledge, (Only option remain to reinstall Windows...) without touching the hardware inside.

Please, help me. Thanks in advance.

 

[dextermat]

Hi,

Scan for virus with malware bytes, AdwCleaner, rogue killer ==> try in safe mode with network connection.

Screen tearing like that is usually bad GPU. Even if you temps are fine, maybe it's bad.

Did you try to run memtest86, might have bad ram because of bsod dump.

 

[casper1973]

With the error code you are getting and lines across the screen this looks very much like a GPU fault.

Did you buy this pre-built? At one month old I'd just take it back and get a new one.

 

[tankerhun]

Update: Now my machine didn't even start up. Got loud beeps, and a CPU fan speed error.
After looking at the BIOS, the speeds were all red, I reduced the minimum 600 RPM to 400.
Hadn't had this yet, maybe the new BIOS?

Well, this isn't a pre-build computer, I bought the parts and a company assembled them.

 

[tankerhun]

Ok, ran Memtest86.

With 2 sticks:

Pass: 48% (froze)
Test: 14% (froze)
Time: 0:05:24 (froze)

Error Confidence Value: 100
Lowest Error Address: 00031c68000 - 769.4 MB
Highest Error Address: 00039d20ffc - 925.1 MB
Bits In Error Mask: ffffffff
Bits In Error Total: 32 Min: 1 Max 3: Avg.: 4800 (rising to infinity)
Max Contiguous Errors 65535+
Test - Errors
1 - 4083
2 - 3979
3 - 8156
4 - 32606
5 - 40590

With 1 stick:
No errors whatsoever. System boots fine.

With the another stick:
Same errors like with 2 sticks, it even freezes memtest86 like 2 sticks. Windows doesn't even boot.

Gonna get a replacement, and keep testing with 1 stick. Gonna see if the BSOD comes again.