Samsung LED Monitor Flicker

Recently upgraded my motherboard, processor and RAM about a week back. After installing the hardware, initially everything ran ok on a freshly installed windows XP. But as I started using the PC, updating windows etc, I noticed a slight flickering of the screen on the right side. This is limited only to about 1/3rd part of the screen on the right side. The rest of the screen has no flicker. Sometime it gets worse to the point that the right side becomes completely distorted with vertical lines and bars. The side screen flicker also appears during boot start up screen (where one has the option to press Del to enter setup), and in bios, safe mode too.

Some things I have tried till now..
1) Uninstalled XP, formatted and installed Windows 7 ultimate SP1 & updated Windows 7.
2) Updated drivers for motherboard & monitor from these links, they seems the latest. (36.9 MB) (118 MB)

3) Re-checked the VGA cable connection, pins, connector seems fine.
4) Connected my old CRT Samsung monitor, it shows no flicker..

LED monitor was working fine for months, the motherboard, CPU & RAM were assembled in the shop and packed up. Only thing I did was unplug the LED monitor, installed the new motherboard in the cabinet and plugged it back in..
Only issue I can remember is first time after the fresh XP install, I installed the drivers for motherboard from the manufacturer's disk provided. Then I installed drivers and Magictune utility from the Samsung CD. After installing Magictune, the PC started restarting again and again until I went into safe mode and uninstalled Magictune. Could this have started the flickering.. Can there be some conflict between the LED monitor & the latest PC component I brought !

System Info:
OS: Windows 7 Ultimate SP1 32-bit (6.01, Build 7601)
Motherboard: Digilite A76ML-K 3.0 (AMD® 760G Series)
Display: ATI Radeon 3000 Graphics (ATI display adapter 0x9616) (1366x768, 60Hz) (Driver Version: 8.850.0.0)
CPU: AMD Athlon(tm) II X2 250 Processor, 3000 Mhz, 2 Core(s), 2 Logical Processor(s)
Monitor: Samsung SyncMaster S19A300N 19" inch LED (about 6 months old now).
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  1. same prob here T.T,,1/3 of the screen at right side was flickering til become full white,,wew but my video card was working properly ..
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