Window cant not detect networking hardware

I shut down my desktop, then turn it back on after 4 hours, the window system seems have changed. then i notice there is no internet connection and when i go to control panel to connect to a network, it says that window did not detect any networking hardware. In addition, when I check the system in control panel, I notice that the processor and the ram displayed as not available. I don't know what is going on here, any help is appreciated, thank you in advance.

I have a custom build
Rating 5.9 windows experience index
intel r core tm i5 4670k cpu 3.4 ghz
8.gb ram (3.46 gb usable)
32 bit
msi motherboard
geforce gtx 760

ps the audio service is not running, is it possible that there is some subtle problems in my motherboard?
I do have internet driver.

mother board is msi z87 g45 gaming (ms7821) intel z87 lynx point

Layback Bear said:

Welcome to the forum jhua286.

Well I see a problem.

8.gb ram (3.46 gb usable)
32 bit

Windows 7/32 bit will only see and use a max. of 4 gigs of ram.

You will need to install Windows 7/64 bit to use all 8 gigs of ram.

for some reason when i try to reinstall the window 7 with the cd, it wont let me. how can i install window 7 64 bit, what do i have to do.