Question Ram setting to single channel after shutting down pc

[Nem1x]

I have 2 stick of ram each 4gb at 1333 Mhz . When I turn my pc on in bios it show that only 4 gb are installed . Looking into the Windows properties there is 8gb avalible but only 4 usable . In cpuz it show both stick are shown up . I found the way how to fix this but it is only temporarily . Switch PSU off and then on will fix this problem untill next shutdown .
Stick are not the same but they used to work perfectty fine in past 3 years . Again same speeds and size . The motherboard has only two ram slots . I also tried removing cmos battery but that did not work . Updated bios to newest version .
Specs :
Athlon II x4 640
Gtx 750
8GB ram (2x4) (One stick by G Skill and other by Crucial )

 

[CountMike]

I have 2 stick of ram each 4gb at 1333 Mhz . When I turn my pc on in bios it show that only 4 gb are installed . Looking into the Windows properties there is 8gb avalible but only 4 usable . In cpuz it show both stick are shown up . I found the way how to fix this but it is only temporarily . Switch PSU off and then on will fix this problem untill next shutdown .
Stick are not the same but they used to work perfectty fine in past 3 years . Again same speeds and size . The motherboard has only two ram slots . I also tried removing cmos battery but that did not work . Updated bios to newest version .
Specs :
Athlon II x4 640
Gtx 750
8GB ram (2x4) (One stick by G Skill and other by Crucial )

Check/change CMOS battery,maybe too low to remember settings.

 

[SamirD]

I would swap the position of the two modules and see if it helps. Otherwise, one or the other may be going bad.

 

[Nem1x]

So I swaped out the Cmos battery and ram positions but that didnt work . I also tried different ram stick , still no luck there . So its probably motherboard or bios that is switching to single channel mode .