When I log-on to my system...

[satya_gen]

My conf:
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AMD-64 3000+ (939 socket)
MSI RS480M2-IL motherboard - on board ATI Radion Xpress 200 Graphics driver
512 MB - Single DDR Transend RAM 400 FSB (PC 3200)
80GB - Seagate SATA Hard disk
OS- Windows XP Professional SP2, (V.2149)
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My problem is,
Once i log on to my system, It shows my default desktop. Immediately 2 seconds monitor goes to black screen and again it come back to my original desktop.

Why it goes to black screen from the begining?

This problem is not comming when i finished the Windows XP installation. After i installed ATI Display driver, then only this black screen is comming.
I installed ATI Radion latest Display driver(Catalyst 5.7)

What i have to do?
Please tell any suggestion...

[siriusb]

I think it's the systray utility of ati catalyst that gets started. Disable the ati tray icon and see if it helps.

[cooltarun]

Right it is the ati catalyst tray icon. Disable it and you won't have the problem.