Screen flickering(Brand new PC) (was forum=28)Follow

So i got this new PC and monitor about 2 weeks ago, it kicks lots of *** but i have a problem, the screen flickers in and out from regular color to a tint of magenta, if anyone knows what the problem could be, please let me know.

Some suspicions:

1. A bad\loose Monitor->Computer cable
2. My 3D card is way bigger(physically) than the one that came in it, maybe it is loose or touching something else that may fuzz up some circuitry
3.Possible power issues

Computer Specs:

Monitor ( LCD Monitor [--- Special ---] 20.1" LCD 16:10 Wide WSXGA HD(HDCP)
Case ( Nzxt Guardian 921 Gaming Tower Case w/420W Power Supply Black )
Case Lighting ( Cold Cathode Neon Light Green )(Even shut off screen will still flicker)
Power Supply ( 420W that came with case)
Processor ( [=== Quad Core ===] Intel Core 2 Quad Processor Q6600 (4x 2.4GHz/8MB L2 Cache/1066FSB) )
Processor Cooling ( [=== Quiet ===] AVC Silent Intel CPU Fan and Heatsink Quiet & Overclocking Proof )
Motherboard ( [SLI] MSI P7N SLI-FI Nvidia nForce 750i SLI Chipset w/7.1 Sound, Gb LAN, S-ATA Raid, USB 2.0, IEEE-1394, Three PCI-E MB == $20 OFF Mail-In Rebate == )
Memory ( 2 GB [1 GB X2] DDR2-800 PC6400 Memory Module Corsair-Value or Major Brand )
Memory: I added another 1x 2GB stick, for 4Gb total
Video Card ( 1x NVIDIA GeForce 9800GT 512MB w/DVI + TV Out Video - running SLI mode )
Video Card Brand ( Major Brand Powered by NVIDIA )
Hard Drive ( 620 GB HARD DRIVE [Serial-ATA-II, 3Gb, 7200 RPM, 16M Cache] )
CD/DVD Drive ( [** Special !!! ***] LG 20X Dual Format/Double Layer DVD±R/±RW + CD-R/RW Drive Black )
Sound Card ( Creative Lab Sound Blaster Audigy SE )
Speaker System ( 600W PMPO 3 PCS Super Bass Subwoofer Speaker System )
Network Card ( Onboard LAN Network (Gb or 10/100) )
Monitor Support DVI Video up to 1080P(HDMI) )
Keyboard ( Logitech Deluxe Keyboard Black )
Mouse ( Logitech Optical Internet Mouse Black )
USB 2.0 Accessories ( Built-in USB 2.0 Ports )
Flash Media Reader/Writer ( 12-In-1 Internal Flash Media Card Reader/Writer Black )
Operation System ( Microsoft Windows Vista Home Premium + [Free 60-Day !!!] Microsoft Office 2007(Word, Excel, Outlook, PowerPoint, Access ....) 32-Bit )



Edited, Nov 23rd 2008 10:57am by DraftedGomez

I've seen this exact symptom when one or more of the pins on the connecting cable were loose or bent. If possible, try another one.