Go into system information device management tab.Look through your devices to see if there are any conficts.If your system allows a print out,print them.Then you can take this and what you know about your system to the bios settings(after power on press DEL to enter CMOS on most PC's)and set your bios settings accordingly.If you are really new to this you should take notes on the present settings before you attempt to change anything.You may need to return certain settings.You can leave CMOS without saving any entrees if you so choose.
You can also disable power management in the BIOS settings to try to free some resources.It is best to keep a record of your bios settings.