Dead blank screen

SOURCE: Monitor goes blank after showing XP logo screen (black screen with the xp logo right after boot up screens)

There are different reasons why this might happen. Let's try some. 1.) Does your board have an onboard video card, cause if it does, then XP might be using that as the primary monitor. TRy plugging into the onboard video when you start up! If that works then you need to disable the onboard video.(try disabling it in bios!) if not then 2.)When booting at the select xp or recovery console, press F8. You'll get the menu with safe mode and what not. Go down to Enable VGA Mode then press enter. If that works, go to display settings and lower your resolution then restart. But usually when this happens your monitor says "Out of Range" but u can still try Well if that doesn't work, tell me more! Regards, Armando

SOURCE: blank screen after grapics card installtion

NO NO NO!
The 7900 is vastly superior to the 8500gt!
the 8500gt is a low end budget card not suitable for demanding games- return it get rid of it, that is a massive step down form the 7900. Its likegoing from a 7900 to a 7600 or worse!

SOURCE: Screen goes blank when Google Earth globe starts zooming in

Update video card drivers from the manufacturer website. Update direfctx.

SOURCE: ATI Mobility Radeon HD 2400

It is not possible to replace a graphics card on a laptop. The video chip is part of the motherboard and most likely the fix is a replacement motherboard.
How do you know it is a video card fault? If could just a back-light problem. Please follow my instructions to determine the fault and possible fix - click on this link :-
http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

SOURCE: Ati radeon HD 3650 agp crashes!

Its could be overheating because its happening during games and the card takes straine....i suggest download ATI tool and put you r fan speed up to cool your card down here is the link for ati tool http://www.techpowerup.com/downloads/Tweaking/ATITool/ ...otherwise also try updating your driver by downloading it from this link...http://drivers.softpedia.com/get/GRAPHICS-BOARD/ATI/HP-ATI-Radeon-HD-3200-3450-3650-Graphics-Driver-853310-Rev-A.shtml