i bought one new PC with following configuration ::
CPU : AMD PHENOM II X2 550
MOTHERBOARD : M4N68 T-M
RAM : TRANSCEND DDR3 1333MHz
GRAPHIC CARD : XFX NVIDIA 250GTS 1GB HDMI
MONITER : SAMSUNG B2230
SMPS : ZEBRONICS 500W DELTA SERIES
THE PROBLEM IS ::
"WHEN I CONNECT THE 24-PIN DVI CABLE TO MY MONITER AND TURN ON THE SYSTEM THE DISPLAY ON MY SCREEN IS "ANALOG-DIGITAL-ANALOG-DIGITAL" AFTER THAT IT SHOWS "CHECK SIGNAL CABLE".......WHATS THE PROBLEM. IS THERE ANY PROB. WITH GRAPHICS CARD OR MONITER.......PLZ GIVE AN URGENT SOLUTION
Most common fault is the video card is either dead or not giving out a signal due to the extra power cable it usually needs not being connected. Make sure the power cable is connected and the PSU is sufficient to run it.
Also try connecting the monitor to the other output on the card, although these days it shouldn't matter which is used.
Failing that, try another card in the system, or try your monitor on another computer.