problem 2x2gb kingstom 800

mam taky problem s maticnou ze mi nechce obe ramky naraz
doska je MSI K9N4 ULTRA-F
http://www.shark.sk/default.aspx?conten ... od_id;7824
ma 2xDDR2, 800max, 4GB, 2 sloty na pamete
pamete mam 2x 2GB kingstom 800, cl 6
ked ich dam obe pc sa nespusti, teda ventilatory a vsetko sa spusti len sa nedostanem ani do bios obrazovka je cierna.
ramky su obe dobre, idu ked ich dam zvlast
predtym som mal v jednom slote tu jednu 2gb a v druhom tu istu ale 1gb

v com je problem ze mi nejdu obe ?

Main Memory
• Supports dual channel DDR2 400/533/667/800, using four 240-pin DDR2 DIMMs.
• Supports the memory size up to 4GB
• Supports 1.8v DDR2 SDRAM DIMM
Due to the High Performance Memory design, motherboards or system configurations may or may not operate smoothly at the JEDEC (Joint Electron Device Engineering Council) standard settings (BIOS Default on the motherboard) such as DDR2 voltage, memory speeds and memory timing. Please confirm and adjust your memory setting in the BIOS accordingly for better system stability.
Example: Kingston HyperX DDR2-800 PC-6400 operates at 2.0V, 4-4-4-12.
For more information about specification of high performance memory modules, please check with your Memory Manufactures for more details.

nevie niekto nahodou ako to nastavit manualne v biose ?
alebo som to kupil uplne zbitocne a nepojde to
a este nieco keby som to vymenil za Cl5, 667 tak by to uz slo normalne ci nie ?

takze vobec nikto nema predstavu ako by sa to dalo rozbehat ? som to kupoval zbitocne mozem to vyhodit