pues no es la video, son las memorias
http://support.asus.com/Troubleshooting/detail.aspx?SLanguage=en&p=1&m=F1A75-M%20LE&s=41&hashedid=K4lhVLDDsaewoHxy&os=&no=978No POST
Solution
1 the power LED is on
1.1 Make sure all cables are connected well
1.2 Please clear CMOS to have a try(refer to motherboard manual for details)
1.3 Keep the necessary components ( a CPU, a memory, a graphic card )on board to test
1.4 If there is still blank screen, please connect the connector of speaker to check if there is any beeps
1.4.1 If there is no beep, please contact your retailer for a check
1.4.2 If there is beep, please try to judge from the beep code as the following steps, if the problem still remains after the troubleshooting, please contact your retailer for a check.
1.4.2.1 Memory issue: Beep (1 long 2 short)
A Clean the Golden Finger of memory
B Clean the memory slots
C Leave only one memory stick to test
D If convenient, please change different memory to test again