HI, long story to tell, but i bought an ATI X 1900 GT LAST YEAR to replace the Asus X300SE i had. Installed it fine, worked for a COUPLE OF MONTHS then the computer started rebooting on its own, then it started outputting the "no signal" message on start up! The weird thing is on occasion it would boot up normally but nothing would appear on the monitor! I have tried removing the drivers of the old card but it was in vain. Suspected the power supply (i have 400W) but why did it work in the first place, compatibility or bad luck? life line please?